Cider apple
Idared
An Idaho cross of Jonathan and Wagener released in 1942, exceptionally long-keeping and reliably sharp, and one of the most heavily pressed apples in the northern-hemisphere juice trade.
Also written Idared.
- Classification
- Sharp — Long Ashton classification
- Harvest
- Late (Late October)
- Single varietal
- Not suited to a single-varietal cider
- Blend role
- Acid lift, Bulk juice, Late season
- Origin
- Idaho Agricultural Experiment Station, Moscow, Idaho
- Species
- Malus domestica
- Vigour
- Moderate
- Biennial bearing
- Slightly biennial
- Keeping
- Very good — holds in store for weeks
How it is classified
Long Ashton classification
Sharp
High acid, low tannin. Includes both purpose-grown sharps and many culinary apples.
Basis: Above about 0.45% w/v acid and below about 0.2% w/v tannin.
Assessed in Fruit grown in New York State trial plantings.
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.
| Axis | Typical | Range |
|---|---|---|
| Acid | High | |
| Tannin | Negligible | |
| Sugar | Moderate | |
| Bitterness | None | |
| Astringency | None | |
| Aroma | Restrained | |
| Body | Light |
Cornell acid figures with the remaining axes from description of a firm, sharp, aromatically restrained processing apple.
Clean and firmly sharp with very little aromatic character; a functional juice rather than an expressive one.
Aroma
No aroma descriptors are recorded for Idared, and for a great deal of cider fruit that is a finding rather than a gap. Bittersweet apples in particular contribute tannin, sugar and body while being close to aromatically mute, and most of what a cider made from them smells of was produced by the fermentation rather than carried in by the fruit. CiderHQ publishes the absence rather than filling the space with descriptors nothing supports.
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.
| Property | Reading | Where | When | Source |
|---|---|---|---|---|
| Fruit weight | 115 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) |
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.
| Property | Reading | Where | When | Source |
|---|---|---|---|---|
| Brix | 12.3 °Bx | Winchester, Virginia, USA | 2012–2013Modern analysis | Journal of Agricultural and Food Chemistry |
| pH | 3.54 pH | Winchester, Virginia, USA | 2012–2013Modern analysis | Journal of Agricultural and Food Chemistry |
| Titratable acidity | 8.3 g/L | Winchester, Virginia, USA | 2012–2013Modern analysis | Journal of Agricultural and Food Chemistry |
| Total acid | 0.550–0.850 % w/v | Geneva, New York State | 2010sModern analysis | Cornell University, School of Integrative Plant Science |
| Total phenolics | 229.0 mg/L | Winchester, Virginia, USA | 2012–2013Modern analysis | Journal of Agricultural and Food Chemistry |
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.
| Property | Reading | Where | When | Source |
|---|---|---|---|---|
| pH (finished cider) | 3.58 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) | 0.410 % 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) | 0.041 % 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) |
How these were measured
- 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.
- Reported as malic acid. Idared holds acid well in long storage, which is the property the juice trade values it for.
- 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.
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.
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 “Idared”
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 “Idared”
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.
In the orchard
- Harvest window
- Late
- Flowering
- Not recorded
- Vigour
- Moderate
- Cropping
- Slightly biennial
- Keeping
- Very good — holds in store for weeks
Among the longest-keeping cultivars in commercial storage, sound and still acid in late spring.
Disease and pest susceptibility
| Issue | Susceptibility | Note |
|---|---|---|
| Powdery mildew | high | Inherited from Jonathan and a real management burden. |
| Fire blight | high | — |
| Apple scab | moderate | — |
Juice and pressing
- Dependable acid that survives months of storage.
- Low sugar and no tannin.
- Very high juice yield.
- Aromatically neutral, which makes it a useful diluent for a blend with too much of someone else’s character.
How it is used
- A very large-volume processing and juice apple in North America and central Europe.
- The standard out-of-season acid supply for blended juice and cider.
On its own
Not suited to a single-varietal cider
Sharp, thin and characterless on its own. Its whole value is that it is available and acid in March.
About Idared
Idared exists to be in cold store. It is firm, it keeps almost indefinitely by apple standards, and it holds its malic acid while it does so — which means a juice plant or a cider maker working in late winter has a source of acid when nothing else remains. Across North America and central Europe it is pressed in enormous volume for exactly that reason.
Nothing about it is aromatically interesting, and that is not a criticism so much as a description of the job. A blend that has plenty of character and not enough acid needs a neutral sharp, and a fruit that adds acid without adding flavour is precisely what is wanted. Idared is the northern-hemisphere default for that role.
It is a difficult tree, inheriting Jonathan’s mildew susceptibility and adding a serious fire blight problem of its own. In the eastern United States that is a substantial planting objection, and much of the Idared in the American juice supply is grown in drier western regions where both diseases are easier to manage.
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.
Parentage · a recorded cross
Jonathan crossed with Wagener. Wagener has no CiderHQ record and so does not appear in the parent slug list. Recorded as a cross by the breeding programme that made it, which is strong evidence about what was intended and weaker evidence about which pollen took; no genotyping study CiderHQ has read confirms it.
The breeding programme recorded making this cross. Strong evidence about what was intended; weaker evidence about which pollen actually took, which only genotyping settles.
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.
Bramley’s Seedling
England’s dominant cooking apple, a triploid of very high acid and negligible tannin, and by volume one of the most important fruits in modern British cider.
Browns Apple
The standard Devon sharp: a bright red, heavy-cropping, high-acid apple with almost no tannin, and the fruit most English blends reach for when they need lift.
Granny Smith
An Australian chance seedling of the 1860s that became one of the most planted apples on earth, and — because it is reliably sharp when almost nothing else commercial is — a genuine workhorse of commercial cider worldwide.
McIntosh
The defining apple of eastern Canada and northern New England — an Ontario seedling of about 1811 whose perfumed, high-acid juice is the aromatic foundation of most Quebec and northeastern cider.
Baldwin
The dominant New England apple of the nineteenth century until a single catastrophic winter destroyed the orchards; a firm, moderately sharp keeper still used in northeastern cider blends.
Braeburn
A New Zealand chance seedling found near Motueka in the 1950s, sharper and denser than most modern dessert apples, and one of the better commercial cultivars available to a cider blender.
Styles it is characteristic of
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 long can apple juice sit before i ferment it — Only hours at room temperature before wild fermentation begins. Chilled and sulphited it can be held for a day or two; beyond that it needs freezing, pasteurising or fermenting.
- What is juice blending
- What is modern american cider like
- Is jonathan apple good for cider — It is used as a sharp. A late-1970s Geneva analysis of finished cider gave 0.58 per cent acid and pH 3.41 on 13.0 degrees Brix — enough acid to be useful in a blend, and no tannin to speak of.
- Is michigan a cider state — A large one, built on a different foundation from the others. Lake-moderated shorelines support apple growing at scale, but the crop is dessert and processing fruit, so Michigan cider starts from culinary apples rather than from a bittersweet repertoire.
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.
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
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.
Research Evidence standard for this record. What that means.