Glockenapfel

How it is classified

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 drink will be.

Large, pale and distinctly bell-shaped, with a firm flesh and a high, clean acid that holds through months of storage.

Aroma

No aroma descriptors are recorded for Glockenapfel, 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.

Put Glockenapfel 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.

Where it sits among the varieties each programme measured

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.

In the orchard

Harvest window

Late

Flowering

Pollination group 4

Vigour

Vigorous

Cropping

Markedly biennial — heavy and light years alternate

Keeping

Very good — holds in store for weeks

Among the longest-keeping European apples; it was a staple winter and spring fruit in Alpine households.

106 other cultivars on this site with a recorded group could pollinate it — diploids flowering in group 4 or a group either side. See which, with their class and harvest window.

Juice and pressing

• Very high acid that persists in store
• No tannin
• Good juice yield from large fruit

How it is used

• Cooking and long winter storage, its principal uses
• Swiss Suure Most and juice from surplus fruit

On its own

About Glockenapfel

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.

Related cultivars

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

• Traditional blend partner

  Sauergrauech

  The Swiss cultivar with structure, blended against this one’s pure acid.

• Similar role

  Boskoop

  Another large, very acid, long-keeping culinary apple that supplies acid to Most.

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.

• Blanquina

  A pale-skinned Asturian cultivar of high reputation, and — like Raxao, with which it is usually named — an acid-block fruit rather than a semi-acid one.

• Regona

  The most acid cultivar the Asturian designation characterises, at 7,1 g/L, and one of the most planted: a late, hard, acid-bitter fruit that supplies the backbone of *sidra natural*.

• Rheinischer Bohnapfel

  The classic German *Mostapfel*: a very late, very acid, enormously productive Rhineland cultivar that carried more Apfelwein and Viez through the twentieth century than any other single fruit.

• Txalaka

  The most widely recognised Basque cider apple: a hard, sharp, late cultivar from Gipuzkoa that supplies much of the acid backbone of *sagardoa*.

• Fuentes

  The second-most acid cultivar the Asturian designation characterises: a vigorous, heavy-cropping tree whose juice runs to 6,2 g/L of acid, and which and which sits at the opposite end of the register from the sweet block.

• 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.

Where it grows

• Swiss Plateau
• Baden-Württemberg
• Trentino

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 you blend cider
• How should i store cider — Cool, dark and at a steady temperature. Light causes light-strike in clear glass, warmth accelerates oxidation, and temperature swings push cider past the closure of a bottle that is not tightly sealed.
• Is boskoop good for cider — It is one of the apples most often recommended for German and Dutch cider, on high acid rather than on tannin. Belle de Boskoop is a large, russeted, long-keeping culinary apple, and its role in a blend is the same as any sharp: acid and a lower pH.
• How do you adjust the acidity of cider
• How long can apples be kept before pressing
• Does switzerland have its own cider apples — A few. Sauergrauech is an old Bernese apple, sharp and unusually astringent for the region, and one of the small number of Swiss cultivars a cider maker would recognise as purpose-grown press fruit rather than a table apple pressed for want of a better use.

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.

• Hochschule Geisenheim University — beverage technology

  Hochschule Geisenheim · university · retrieved 2026-08-24

  German beverage-technology research covering apple wine and fruit juice processing, including the enzymology of clarification.

• National Fruit 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.