Cider apple
Perthyre
A Monmouthshire bittersweet named for a farm near Monmouth, conserved by Welsh and border orchard groups and grown in small quantity.
Also written Perthyre Apple.
- Classification
- Bittersweet — Long Ashton classification
- Harvest
- Mid (Late September to mid October)
- Single varietal
- Not suited to a single-varietal cider
- Blend role
- Bittersweet base, Bulk juice
- Origin
- Perthyre, near Monmouth, Monmouthshire
- Species
- Malus domestica
- Vigour
- Moderate
- Biennial bearing
- Markedly biennial — heavy and light years alternate
- Keeping
- Moderate
How it is classified
Long Ashton classification
Bittersweet
Low acid, high tannin. The class that has no real equivalent in dessert fruit and that defines West Country cider.
Basis: Below about 0.45% w/v acid and above about 0.2% w/v tannin.
A medium bittersweet, placed on description. No analysis of this cultivar is published and the placement should be read as provisional.
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 | Low | |
| Tannin | Moderate | |
| Sugar | Moderate | |
| Bitterness | Moderate | |
| Astringency | Noticeable | |
| Aroma | Restrained | |
| Body | Medium |
Description of the fruit in Welsh and border cultivar records. Nothing measured attaches to it.
Adds moderate tannin and body to a Monmouthshire blend.
Aroma
No aroma descriptors are recorded for Perthyre, 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.
Total acid0.330 % w/v
Long Ashton Research Station, near Bristol, Somerset, England, 1905–1975 · 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. · Andrew Lea
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.
How much acid the juice contains, conventionally reported as malic acid. Measured in percent weight per volume.
Total tannin0.180 % w/v
Long Ashton Research Station, near Bristol, Somerset, England, 1905–1975 · 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. · Andrew Lea
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.
The phenolic fraction responsible for bitterness and astringency. Measured in percent weight per volume.
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.
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 “Perthyre”, early/mid season
Filed here as bittersweet, though the juice measured at this site falls in the sweet quadrant of the site’s own thresholds.
The table lists this fruit as bittersweet 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.
In the orchard
- Harvest window
- Mid
- Flowering
- Not recorded
- Vigour
- Moderate
- Cropping
- Markedly biennial — heavy and light years alternate
- Keeping
- Moderate
October.
No pollination group is recorded.
Disease and pest susceptibility
| Issue | Susceptibility | Note |
|---|---|---|
| Scab | moderate | — |
Juice and pressing
- Low acid
- Moderate tannin
How it is used
- A bittersweet component of Monmouthshire farm cider
On its own
Not suited to a single-varietal cider
A blending fruit with no varietal tradition.
About Perthyre
Perthyre is named for a farm a few miles from Monmouth, and its history is the history of a great many Welsh border cultivars: grown locally, grafted between neighbours, never distributed, and rediscovered in the late twentieth century by people going round old orchards recording what was still standing.
The Marcher Apple Network and the Welsh Perry and Cider Society between them have done most of that work, and the reason cultivars like this have names and identities today is that somebody went and looked. This record cites those bodies for identity and distribution, which is what they are competent for, and takes the classification no further than description supports.
The fruit is a medium bittersweet used in local blends. No analysis exists for it, and none is offered here.
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 · traditional account
Named for a farm near Monmouth. The locality is clear from the name; the raising is not documented, and the cultivar reaches the present through conservation work rather than through commerce.
Related cultivars
Recorded relationships, including the ones this fruit is routinely confused with.
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.
Michelin
A Norman bittersweet raised near Yvetot in the 1870s that became, in England rather than in France, one of the most widely planted cider apples in the world.
Somerset Redstreak
A mild bittersweet planted at very large scale in the late twentieth century for its heavy, regular cropping on bush trees, and a fruit whose commercial importance exceeds its character.
Brown Snout
A Herefordshire mild bittersweet named for the russet patch at its eye, valued for compact growth and regular cropping rather than for concentration.
Bulmer’s Norman
A large, vigorous French-derived bittersweet imported by H P Bulmer and planted across Herefordshire for heavy cropping and mild, plentiful juice.
Hangdown
A Devon mild bittersweet named for its weeping habit, sitting close enough to the tannin threshold that sources place it on both sides of it.
Backwell Red
A north Somerset bittersweet from the village of Backwell, close to Long Ashton itself, giving moderate tannin from a heavy-cropping tree.
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.
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.
WPCS · specialist organisation · retrieved 2026-08-24
Documents Welsh cider and perry traditions and has done substantial work identifying and conserving Welsh perry pear cultivars that were close to being lost.
Marcher Apple Network · specialist organisation · retrieved 2026-08-24
Has rediscovered and DNA-fingerprinted a number of lost Welsh border cultivars. Cited for identity work on cultivars the national collections do not hold.
A Somerset Pomona: The Cider Apples of Somerset
Liz Copas, The Dovecote Press, 2001. ISBN 9781874336877 · reference work · bibliographic record verified, not opened 2026-08-25
Bibliographic record verified on 2026-08-25 against Open Library: Liz Copas, The Dovecote Press, 2001, ISBN 9781874336877. The author was Long Ashton’s cider pomologist, which is why this work is registered for Somerset cultivar identity at all — it is the nearest thing to a successor to the station’s own descriptions. No copy was opened. Not digitised in any open collection.
University of Reading / Defra, Brogdale · research institute · retrieved 2026-08-24
The UK national reference collection for apple and pear cultivars. The authority CiderHQ uses for whether two names are the same fruit, which is the central duplicate-resolution problem in cider data.
Expert reference Evidence standard for this record. What that means.