Cider apple

Golden Delicious

A West Virginia chance seedling of about 1890 that became one of the most planted and most bred-from apples in history — high in sugar, low in acid, and by volume one of the largest single inputs to cider worldwide.

Also written Golden Delicious, Yellow Delicious.

Classification: Sweet — Long Ashton classification
Harvest: Mid (Late September to mid October)
Single varietal: Sometimes bottled on its own
Blend role: Sugar and body, Bulk juice, Aroma
Origin: Clay County, West Virginia
Species: Malus domestica
Vigour: Moderate
Biennial bearing: Regular cropping
Keeping: Moderate

How it is classified

Long Ashton classification

Sweet

Low acid and low tannin. Fruit that contributes sugar, alcohol and body but little structure or sharpness.

Basis: Below about 0.45% w/v acid and below about 0.2% w/v tannin.

Assessed in Fruit grown in western Washington State.

Low acid, negligible tannin. It falls in the same class as a West Country sweet cider apple and behaves quite differently, because the scheme measures neither aroma nor the kind of phenolic material a cider apple carries.

Every classification on CiderHQ names its system. Why there is more than one.

What it contributes to a blend

A direction, not a measurement. These bands are the level of resolution the evidence supports, and they say which way adding this fruit pushes a blend rather than what the finished cider will be.

Contribution to a blend, scored 1–5 as a band. The filled segment is the typical value; the paler segments are the range.
Axis	Typical	Range
Acid	Low
Tannin	Negligible
Sugar	High
Bitterness	None
Astringency	None
Aroma	Present
Body	Medium

Based on: published analysis

WSU acid and Brix figures from Washington fruit, with the phenolic axes at the floor and a moderate aroma band reflecting its honeyed character.

Honeyed and softly spiced with a mild, quickly fading acidity; the aroma is real and the structure is absent.

Aroma

Descriptors associated with this fruit. Each names a character with a known cause, and association is not a promise — what reaches the glass depends on the ferment as much as on the apple.

Ripe apple — Full orchard-apple aroma from the acetate esters an apple accumulates through ripening and carries into the finished drink.

Put Golden Delicious into a blend

Measured analysis

Each figure is shown with where and when it was taken. They are not averaged: the same cultivar grown in another climate genuinely gives different numbers, and collapsing them into one would be the most misleading thing this page could do.

Measured on the fruit

Measured on the fruit itself, before anything was done to it. These figures hold whatever was later made from the juice.

Reported analyses of Golden Delicious, by property and source — measured on the fruit
Property	Reading	Where	When	Source
Fruit weight2 readings, spanning 105–215 g	215 g (163–266)	USDA-ARS Plant Genetic Resources Unit, Geneva, New York, USA	2017Modern analysis	Cornell University / USDA-ARS Plant Genetic Resources Unit
	105 g	New York State Agricultural Experiment Station, Geneva, New York, USA	late 1970sHistoric analysis	AVI / Van Nostrand Reinhold, New York, 1989, edited by Donald L. Downing (ISBN 0-442-22117-7)
Fruit diameter	75 mm (69–82)	USDA-ARS Plant Genetic Resources Unit, Geneva, New York, USA	2017Modern analysis	Cornell University / USDA-ARS Plant Genetic Resources Unit
Fruit firmness	79.1 N (71.9–86.3)	USDA-ARS Plant Genetic Resources Unit, Geneva, New York, USA	2017Modern analysis	Cornell University / USDA-ARS Plant Genetic Resources Unit
Starch pattern index	7.3 SPI (6.8–7.7)	USDA-ARS Plant Genetic Resources Unit, Geneva, New York, USA	2017Modern analysis	Cornell University / USDA-ARS Plant Genetic Resources Unit

Measured on the juice

Measured on juice as pressed, before fermentation. This is where most cider analysis lives and what the classification schemes are defined on.

Reported analyses of Golden Delicious, by property and source — measured on the juice
Property	Reading	Where	When	Source
pH4 readings, spanning 3.60–3.90 pH	3.60 pH (3.31–3.89)	USDA-ARS Plant Genetic Resources Unit, Geneva, New York, USA	2017Modern analysis	Cornell University / USDA-ARS Plant Genetic Resources Unit
	3.84 pH	Winchester, Virginia, USA	2012–2013Modern analysis	Journal of Agricultural and Food Chemistry
	3.90 pH	England — the source does not name the orchards	1922–1977Historic analysis	National Association of Cider Makers, Archive of Cider Pomology
	3.60 pH	England — the source does not name the orchards	1922–1977Historic analysis	National Association of Cider Makers, Archive of Cider Pomology
Total acid4 readings, spanning 0.300–0.450 % w/v	0.300–0.500 % w/v	Mount Vernon, Washington State	2010sModern analysis	Washington State University Northwestern Washington Research and Extension Center
	0.450 % w/v	Long Ashton Research Station, near Bristol, Somerset, England	1905–1975Historic analysis	Andrew Lea
	0.300 % w/v	England — the source does not name the orchards	1922–1977Historic analysis	National Association of Cider Makers, Archive of Cider Pomology
	0.440 % w/v	England — the source does not name the orchards	1922–1977Historic analysis	National Association of Cider Makers, Archive of Cider Pomology
Brix3 readings, spanning 13.0–14.0 °Bx	12.0–16.0 °Bx	Mount Vernon, Washington State	2010sModern analysis	Washington State University Northwestern Washington Research and Extension Center
	13.0 °Bx (12.2–13.8)	USDA-ARS Plant Genetic Resources Unit, Geneva, New York, USA	2017Modern analysis	Cornell University / USDA-ARS Plant Genetic Resources Unit
	13.1 °Bx	Winchester, Virginia, USA	2012–2013Modern analysis	Journal of Agricultural and Food Chemistry
Total tannin3 readings, spanning 0.050–0.060 % w/v	0.060 % w/v	Long Ashton Research Station, near Bristol, Somerset, England	1905–1975Historic analysis	Andrew Lea
	0.050 % w/v	England — the source does not name the orchards	1922–1977Historic analysis	National Association of Cider Makers, Archive of Cider Pomology
	0.060 % w/v	England — the source does not name the orchards	1922–1977Historic analysis	National Association of Cider Makers, Archive of Cider Pomology
Specific gravity2 readings, spanning 1.045–1.065 SG	1.065 SG	England — the source does not name the orchards	1922–1977Historic analysis	National Association of Cider Makers, Archive of Cider Pomology
	1.045 SG	England — the source does not name the orchards	1922–1977Historic analysis	National Association of Cider Makers, Archive of Cider Pomology
Titratable acidity2 readings, spanning 5.2–5.7 g/L	5.2 g/L (4.5–5.9)	USDA-ARS Plant Genetic Resources Unit, Geneva, New York, USA	2017Modern analysis	Cornell University / USDA-ARS Plant Genetic Resources Unit
	5.7 g/L	Winchester, Virginia, USA	2012–2013Modern analysis	Journal of Agricultural and Food Chemistry
Total phenolics2 readings, spanning 218.0–630.0 mg/L	630.0 mg/L (570.0–690.0)	USDA-ARS Plant Genetic Resources Unit, Geneva, New York, USA	2017Modern analysis	Cornell University / USDA-ARS Plant Genetic Resources Unit
	218.0 mg/L	Winchester, Virginia, USA	2012–2013Modern analysis	Journal of Agricultural and Food Chemistry
Fructose	89.0 g/L (64.3–113.7)	USDA-ARS Plant Genetic Resources Unit, Geneva, New York, USA	2017Modern analysis	Cornell University / USDA-ARS Plant Genetic Resources Unit
Glucose	21.3 g/L (13.2–29.4)	USDA-ARS Plant Genetic Resources Unit, Geneva, New York, USA	2017Modern analysis	Cornell University / USDA-ARS Plant Genetic Resources Unit
Sorbitol	11.4 g/L (2.1–20.7)	USDA-ARS Plant Genetic Resources Unit, Geneva, New York, USA	2017Modern analysis	Cornell University / USDA-ARS Plant Genetic Resources Unit
Sucrose	76.9 g/L (53.7–100.1)	USDA-ARS Plant Genetic Resources Unit, Geneva, New York, USA	2017Modern analysis	Cornell University / USDA-ARS Plant Genetic Resources Unit

Measured on the finished drink

Measured on the finished drink, after fermentation. Not comparable with the juice figures above: fermentation, fining and time move all of these, and phenolics in particular fall substantially.

Reported analyses of Golden Delicious, by property and source — measured on the finished drink
Property	Reading	Where	When	Source
pH (finished cider)	3.72 pH	New York State Agricultural Experiment Station, Geneva, New York, USA	late 1970sHistoric analysis	AVI / Van Nostrand Reinhold, New York, 1989, edited by Donald L. Downing (ISBN 0-442-22117-7)
Total acid (finished cider)	0.210 % w/v	New York State Agricultural Experiment Station, Geneva, New York, USA	late 1970sHistoric analysis	AVI / Van Nostrand Reinhold, New York, 1989, edited by Donald L. Downing (ISBN 0-442-22117-7)
Total tannin (finished cider)	0.043 % w/v	New York State Agricultural Experiment Station, Geneva, New York, USA	late 1970sHistoric analysis	AVI / Van Nostrand Reinhold, New York, 1989, edited by Donald L. Downing (ISBN 0-442-22117-7)

8 properties here have been measured more than once. The readings are shown as they were taken and are deliberately not averaged — climate, season, ripeness at picking, the age of the tree and the analytical method all move these numbers, and a single figure would hide every one of them. Where a spread is given below a property, it is the distance between separate studies, not the variation within any one of them.

How these were measured

Mean of the fruit sampled per accession; where a bracket is shown it is one standard deviation either side of the mean, not the observed range. Published to two decimal places and shown at the precision CiderHQ displays for the unit.
Mean of the fruit sampled per accession; where a bracket is shown it is one standard deviation either side of the mean, not the observed range.
Cornell generic starch–iodine chart, 1–8, where 1 is no hydrolysis and 8 is complete. Mean of replicate fruit; a bracket, where shown, is one standard deviation either side of it.
Penetrometer, mean of replicate fruit; a bracket, where shown, is one standard deviation either side of the mean.
Refractometer on pressed juice. Mean of replicates; a bracket, where shown, is one standard deviation either side of the mean.
Titration to pH 8.2 with sodium hydroxide, reported as malic acid equivalents. Mean of replicates; a bracket, where shown, is one standard deviation either side of the mean.
Meter on pressed juice before fermentation. Mean of replicates; a bracket, where shown, is one standard deviation either side of the mean.
Löwenthal permanganate titration, reported by the source as grams per litre of tannic acid equivalent and stored here as milligrams per litre by exact conversion so that it sits in one column with the Folin–Ciocalteu figures the site also holds. The two methods do not measure the same thing and are not interchangeable.
Enzymatic assay (Megazyme). Mean of replicates; a bracket, where shown, is one standard deviation either side of the mean.
D-sorbitol/xylitol assay kit (Megazyme), sorbitol dehydrogenase method. Mean of replicates; a bracket, where shown, is one standard deviation either side of the mean.
Titration with alkali, reported as malic acid. Composite figure across many seasons; the source states neither the sample count nor the year of any individual analysis.
Löwenthal permanganate titration, reported as tannic acid equivalent. Composite figure across many seasons; the source states neither the sample count nor the year of any individual analysis.
Mean fruit weight as published. The compiler notes that a typical New York dessert apple weighs about 140 g, so most of these are small fruit — which is normal for cider cultivars and is itself the point of the column.
Titration, reported as malic acid. Analysis of finished cider.
Meter on finished cider.
Method not stated by the source, which is a real limitation: different tannin methods give wildly different figures on the same sample.
Refractometer on pressed juice.
Meter on pressed juice.
Titration, reported as malic acid. Published to two decimal places and shown at the one the site displays.
Folin–Ciocalteu, reported as gallic acid equivalents.
Published in the two-figure form the table uses (a printed 51 meaning 1.051) and written here in full.
Titration, reported as malic acid, on juice from freshly harvested fruit.
Method not stated in the compilation; the Long Ashton work behind it used Löwenthal permanganate titration.
Meter on juice from freshly harvested fruit.

Reported as malic acid from maritime western Washington. Golden Delicious grown in hotter regions — the Po valley, the Western Cape, the Californian interior — ripens further and carries less acid still.
Refractometric. Genuinely good sugar for a dessert apple, and the property that makes Golden Delicious worth having in a blend at all.
A chart position, not a quantity. Almost every accession here scored at or near 8, which says the fruit was picked at or past full starch conversion rather than that the cultivars are alike.
One harvest at one site. Soluble solids move several degrees between seasons and with crop load.
A permanganate figure and a Folin–Ciocalteu figure for the same juice can differ by a factor of two. Compare this reading with other permanganate readings, not with a Folin one.
A composite of Long Ashton analyses reaching CiderHQ through three hands: the station’s own work, a printed compilation (Bulmer’s Pomona, 1987, and Beech and Carr, 1977), and a transcription of that compilation. CiderHQ has seen only the transcription.
A composite of Long Ashton analyses reaching CiderHQ through three hands: the station’s own work, a printed compilation (Bulmer’s Pomona, 1987, and Beech and Carr, 1977), and a transcription of that compilation. CiderHQ has seen only the transcription. A permanganate figure. It is not comparable with a Folin–Ciocalteu total-phenolics figure for the same fruit, and the two can differ by a factor of two.
Reaches CiderHQ through a transcription of a 1989 food-technology chapter, which itself printed unpublished 1980 work from the station. Unlike the chemistry in this dataset it is a measurement of the fruit rather than of the finished cider, so it is comparable with other fruit weights.
Measured on finished cider after a spontaneous fermentation, not on juice. It is not comparable with a juice figure for the same cultivar, and the gap between the two is not a disagreement between laboratories — it is what fermentation did.
Measured on finished cider after a spontaneous fermentation, not on juice. It is not comparable with a juice figure for the same cultivar, and the gap between the two is not a disagreement between laboratories — it is what fermentation did. The compiler notes these tannin figures run at roughly half the Long Ashton juice figures for the same cultivars, and cannot say how much of that is fermentation, how much is Geneva, and how much is method.
A Folin–Ciocalteu figure in gallic acid equivalents. It is not interchangeable with a Löwenthal permanganate “tannin” figure: the two assays respond to different things and can differ by a factor of two on the same juice.
A National Association of Cider Makers compilation crediting three bodies of work — MAFF/ADAS acidity and pH from freshly harvested fruit, Long Ashton cider-making trials with dessert and culinary varieties reported in 1977, and the Long Ashton Annual Report for 1922. The compilation does not say which row came from which, so no row can be dated more precisely than the span of the three.
A National Association of Cider Makers compilation crediting three bodies of work — MAFF/ADAS acidity and pH from freshly harvested fruit, Long Ashton cider-making trials with dessert and culinary varieties reported in 1977, and the Long Ashton Annual Report for 1922. The compilation does not say which row came from which, so no row can be dated more precisely than the span of the three. Several cultivars appear more than once in this table under sample numbers, and the repeats are far apart: Bramley’s acid is 1.21, 1.05 and 1.43 per cent in three rows. Read any single row as one pressing of one parcel of fruit.

Compare within a study to see where these figures sat among the other cultivars the same work analysed — which is a more robust statement than the figures themselves, because absolute values move between laboratories and the ordering inside one study mostly survives.

Watched in the orchard

What named research programmes recorded about this fruit at their own sites. Bloom, harvest and cropping belong to a place and a run of seasons rather than to a cultivar, so they are reported site by site rather than merged.

USDA-PGRU Malus germplasm characterisation

USDA-ARS Plant Genetic Resources Unit, Geneva, New York, in the Finger Lakes region of western New York State · 2017 · Cornell University / USDA-ARS Plant Genetic Resources Unit

Humid continental, with cold winters and warm summers moderated by the Finger Lakes — a sharper seasonal swing than any of the European cider regions whose fruit the collection holds, and warm enough in late summer to bring acid down faster than a maritime autumn does.

Held as: PI 590184, held as “Golden Delicious”

One harvest season. Fruit assessed for weight, diameter, starch pattern index on the Cornell 1–8 chart and flesh firmness by penetrometer; juice pressed and measured for soluble solids by refractometer, titratable acidity by titration to pH 8.2 as malic acid, pH by meter, total phenolics by Löwenthal permanganate titration as tannic acid equivalent, and glucose, fructose, sucrose and sorbitol by enzymatic assay.

Long Ashton composite cider apple analyses

Long Ashton Research Station, near Bristol, North Somerset, England · 1905–1975 · Andrew Lea

Maritime and mild, with wet autumns and few hard frosts — the climate the English cider cultivars were selected in, and the reason their acid and tannin figures here are the ones the rest of the world has spent a century comparing its own fruit against.

Held as: Listed as “Golden Delicious”, dessert season

Filed here as mild sharp, though the juice measured at this site falls in the sweet quadrant of the site’s own thresholds.

The class and the numbers disagree

The table lists this fruit as mild sharp and prints the two figures the 1903 scheme is defined on. Read against the scheme’s own cut-offs — 0.45% acid, 0.20% tannin — those figures fall in the sweet quadrant. Both are reproduced because the disagreement is the source’s, not CiderHQ’s. Neither reading is an error. A class assigned on acid and tannin describes fruit grown somewhere, and this is somewhere else.

Freshly expressed juice, not finished cider. Acid by straight titration against alkali, reported as malic acid; tannin by Löwenthal permanganate titration, reported as tannic acid equivalent. Composite figures across seventy years of analyses: the source gives neither a sample count nor the year of any individual reading.

NYSAES Geneva cider cultivar analyses

New York State Agricultural Experiment Station, Geneva, New York · late 1970s · AVI / Van Nostrand Reinhold, New York, 1989, edited by Donald L. Downing (ISBN 0-442-22117-7)

Humid continental, with a hotter summer and a colder winter than any European cider region. The compiler suggests the growing conditions may be part of why the phenolic figures sit so far below the English ones, and is careful not to claim it.

Held as: Listed as “Golden Delicious”

Analysis of finished cider after a spontaneous fermentation. Acid by titration as malic; pH by meter; tannin by an unstated method; fruit weight as a mean. The data appear to come from a single season, and the original work was unpublished.

Virginia cultivar polyphenol characterisation

Winchester, in the northern Shenandoah Valley, Virginia · 2012–2013 · Journal of Agricultural and Food Chemistry

Humid subtropical shading into continental, with hot summers — warm enough that acid falls faster through the ripening period than it does in a maritime autumn, which is part of why the titratable acidities here run lower than English figures for comparable fruit.

Held as: Listed as “Golden Delicious”

Soluble solids by refractometer, pH by meter, titratable acidity by titration as malic acid, total polyphenols by Folin–Ciocalteu as gallic acid equivalents. Twenty cultivars, one site.

Typical English apple juice analyses

England — the compilation does not name the orchards · 1922–1977 · National Association of Cider Makers, Archive of Cider Pomology

English fruit-growing country, and no closer than that: the source gives neither site nor season for any individual row, which is a real limit on what the figures can be asked to do.

Held as: Listed as “Golden Delicious”, sample 1

Juice from freshly harvested fruit. Acidity and pH credited to MAFF/ADAS; the remainder to Long Ashton cider-making trials with dessert and culinary varieties (1977) and to the Long Ashton Annual Report for 1922. Specific gravity is printed in a two-figure form and written out in full here.

Typical English apple juice analyses

England — the compilation does not name the orchards · 1922–1977 · National Association of Cider Makers, Archive of Cider Pomology

English fruit-growing country, and no closer than that: the source gives neither site nor season for any individual row, which is a real limit on what the figures can be asked to do.

Held as: Listed as “Golden Del 2”, sample 2

In the orchard

Harvest window: Mid
Flowering: Not recorded
Vigour: Moderate
Cropping: Regular cropping
Keeping: Moderate

Precocious, annual and heavy — one of the most productive and predictable commercial trees available, which is much of the reason it was planted so widely.

Shrivels rather than rots in dry storage, which is a well-known handling problem and no obstacle to pressing.

Disease and pest susceptibility

Recorded susceptibility. Pressure differs enormously by region and by season, so these are tendencies rather than predictions.
Issue	Susceptibility	Note
Fire blight	moderate	—
Apple scab	high	—
Russeting	high	Cosmetic russet downgrades a great deal of fruit to processing, and it makes no difference whatever to juice.

Juice and pressing

Good sugar — better than most dessert apples and the main reason it is valued in a blend.
Low acid, usually below the Long Ashton sharp threshold and sometimes well below it.
No tannin at all.
A genuine honeyed, lightly spiced aroma that carries into the ferment.
Very high juice yield.

How it is used

One of the most planted apples in the world, and the dominant cultivar of the Italian and French commercial crop.
A very large-volume input to cider and juice on every continent.
A breeding parent of extraordinary consequence: Gala, Jonagold, Cripps Pink, GoldRush and many others descend from it.

On its own

Sometimes bottled on its own

Made single-varietal in France and the United States, and the sugar and the honeyed aroma give it more to work with than most dessert apples have. The absence of acid leaves it soft and the absence of tannin leaves it short.

About Golden Delicious

Golden Delicious was found on a hillside farm in Clay County, West Virginia, around 1890, and it is difficult to overstate what followed. It became the standard apple of the Italian and French commercial crop, a mainstay in the United States, and — through Gala, Jonagold, Cripps Pink, GoldRush and dozens more — the genetic foundation of modern apple breeding. A large share of the apples now grown anywhere carry its genes.

For cider it supplies sugar and aroma and nothing else. The sugar is genuinely good: better than a Gala, better than a Braeburn, high enough that a blend containing a lot of Golden Delicious ferments to a respectable alcohol without addition. The aroma is honeyed and lightly spiced and survives fermentation reasonably well. The acid is low, often below the sharp threshold, and there is no phenolic material whatever.

That combination makes it a legitimate and useful blend component and an incomplete base. Traditional French makers have long used it in cidre alongside genuine bittersweets, and modern producers worldwide use it for gravity. What it cannot do is give a cider bitterness, astringency, length or ageing capacity, and any account that presents Golden Delicious cider as merely an inferior version of a bittersweet one has misidentified the difference. It is not less of the same thing; it is a different thing, missing an entire dimension.

The Washington figures above should be read with their site attached, and for this cultivar that matters as much as for any in the file. Golden Delicious is grown from the Po valley to the Western Cape to the Californian interior, and the hotter the season the further it ripens and the less acid it retains. A single acid figure for a cultivar grown across that range of climates would be worse than useless.

Names, origin and identity

Cultivar naming is the hardest problem in cider fruit data. The same tree carries different names across ten miles, and two different trees have shared a name for two centuries.

Origin · documented

Found as a chance seedling on the Mullins farm and bought and introduced by a commercial nursery. The finding, the farm and the introduction are all documented.

Parentage · not established

Grimes Golden is generally accepted as a parent on the grounds of geography and fruit character. It is not formally established.

Other names this fruit is known by. Each is a name for the same cultivar, not a separate one — which is why none of them has a page of its own.
Name	Kind	Note
Mullins Yellow Seedling	Historic spelling	West Virginia. The original name, from the family on whose farm the chance seedling was found.
Golden	Trade name	France and Italy. The short form used across the European trade, where the cultivar is grown in very large quantity.

Why it matters

Probably the most consequential apple cultivar of the twentieth century, both as a crop and as a parent.
The clearest single example of a fruit whose cider contribution — sugar, aroma and volume — is real, large and entirely different from what a cider apple contributes.

Related cultivars

Recorded relationships, including the ones this fruit is routinely confused with.

Parentage

Fruit that plays a similar part

Cultivars sharing a classification under the same system and a comparable role in a blend. Not a similarity score — a stated relationship.

Where it grows

What people ask next

Questions readers ask about the things this page mentions. Each one goes to the section that answers it rather than to a page written to receive the question.

How do i balance acid and tannin in a blend — Acid and tannin do different jobs and cannot substitute for each other: acid gives freshness and microbiological safety, tannin gives structure and length. A blend short of acid tastes flabby however tannic it is.
How do you blend cider
Is goldrush good for cider — It is one of the modern scab-resistant cultivars American cider makers use for acid and sugar together. A Virginia study measured 15.0 degrees Brix, pH 3.49, 11.1 g/L acid and 359 mg/L polyphenols.
Where does a ripe apple aroma in cider come from — Full orchard-apple aroma from the acetate esters an apple accumulates through ripening and carries into the finished drink.
What is juice blending
How is supermarket cider made

Where to go next

How cider apples are classified — Why there are four schemes and none of them is universal.
The blend explorer — See which way changing the proportions moves a blend.
Blending — What a cider maker is actually deciding when they build a blend.

Sources

What this page rests on. Where a source is marked as registered rather than read, CiderHQ is recording that the body is authoritative on the subject without claiming to have worked through the document itself. See our evidence policy for what each state means.

Washington State University cider research programme
Washington State University Northwestern Washington Research and Extension Center · university · passage verified 2026-08-24
The single most useful open cider dataset CiderHQ has found. The programme’s cultivar performance database gives juice chemistry, orchard behaviour, bloom and harvest timing and cider-maker tasting notes for 73 cultivars grown at one maritime site over fifteen years, and — unusually — publishes its classification thresholds alongside its figures, so the classification can be checked rather than taken on trust. It also states outright that its results diverge from the English ones. Read in full on 2026-08-24 and transcribed into `data/trials/wsu-mount-vernon.ts`; four published figures were found to be impossible and are withheld there with their reasons.
Cornell Cider Research and Extension programme
Cornell University, School of Integrative Plant Science · university · passage verified 2026-08-24
Runs cultivar trials in New York State and publishes juice chemistry for European cider varieties grown in a North American climate — the single most useful counterweight to treating English figures as universal.
GRIN-Global germplasm database — Malus and Pyrus
United States Department of Agriculture, Agricultural Research Service · research institute · retrieved 2026-08-24
Cider, Hard and Sweet: History, Traditions, and Making Your Own
Ben Watson, The Countryman Press, first edition 1999; third edition 2013 · reference work · bibliographic record verified, not opened 2026-08-25
Bibliographic record verified on 2026-08-25 against Open Library: first published 1999 by The Countryman Press, with five editions recorded and a 2008 printing scanned by the Internet Archive as ciderhardsweethi0000benw. The scan is access-restricted to the print-disabled collection. The site had registered this without a year; it now carries one, and the first-edition date matters because a general trade book on cider written in 1999 predates almost the whole of the North American cider revival it is sometimes cited about.

Research Evidence standard for this record. What that means.