Juice treatment
Juice blending
Combining juices from different cultivars before fermentation so that the blend ferments as a single batch, as against fermenting separately and blending later.
Also called Pre-fermentation blending, Co-fermentation blending, Blending at the press.
- Stage
- Juice treatment
- Traditional in
- Herefordshire, Gloucestershire, Worcestershire, Somerset and 2 more
- What it most changes
- Phenolic character and Acidity
- Safety
- None recorded
What it is
Blending before fermentation means deciding the composition of the cider at the mill and the press rather than in the cellar. Fruit of different classes — bittersweet, bittersharp, sharp, sweet — is milled and pressed together or the juices are combined immediately after pressing, and the resulting single juice is fermented as one batch. This is the historically dominant approach in the Three Counties and in Normandy, and it is a genuinely different practice from the modern one of fermenting cultivars separately and constructing the blend from finished ciders. The two produce different results from the same fruit.
Why it is used
- Co-fermentation lets components integrate through the whole of fermentation and maturation, so tannin, acid and yeast-derived character develop together rather than being combined once each is already fixed.
- It resolves the compositional problem at source: a bittersweet-only juice sits at a pH that is hard to work with, and adding sharp juice at the press fixes that before fermentation rather than after.
- It is far simpler operationally, requiring one fermentation vessel and one set of decisions rather than a cellar full of small lots each needing its own monitoring, racking and topping.
- Where fruit ripens and is picked together, as in a mixed traditional orchard, blending at the press is simply what the harvest produces.
How it works
- Acid from the sharp component lowers the blend’s pH before fermentation begins, which improves sulphite efficacy and microbial stability for the whole batch rather than for one lot in it.
- Phenolics and proteins from different cultivars interact during fermentation: tannin binds protein and yeast cell wall material, and some of what would have been astringency in a single-cultivar ferment is removed with the lees of the blend.
- Nitrogen is pooled, so a nitrogen-poor bittersweet juice ferments on the nutrient contributed by a more generous dessert or sharp component instead of struggling alone.
- Fermenting separately preserves each lot’s character intact and defers the compositional decision until the maker can taste finished material, but nothing then integrates chemically beyond simple mixing and whatever the subsequent maturation achieves.
What it changes
The direction this step pushes the finished drink in, dimension by dimension. A direction, not a measurement: how far it moves depends on the juice, the temperature and how the step is carried out.
| Dimension | Direction | Why |
|---|---|---|
| Phenolic character | Either way | Tannin from a bittersweet component binds protein contributed by the others during fermentation and drops with the lees, so a co-fermented blend usually shows less raw phenolic grip than the arithmetic of its parts predicts. |
| Acidity | Either way | The blend’s acidity is set by its sharp component and its buffering by the potassium load of all of them, so the outcome depends on proportions rather than moving in a single direction. |
The chemistry and the organisms
What is actually being changed, and by what. Each entry says what that compound or organism does in cider generally; this page is one place it does it.
Compounds involved
Malic acid
The acid of apples, which supplies almost all the sharpness a cider has and, through pH, decides how vulnerable that cider is to everything that could spoil it.
Procyanidins
The condensed tannins of cider fruit, whose chain length — not their quantity — decides whether the mouth registers bitterness or astringency.
Total phenolics
The single number used to summarise everything phenolic in a juice, useful for comparing fruit and misleading whenever it is used to predict how a cider will taste.
Yeast-assimilable nitrogen
The nitrogen a yeast can actually use, which apple juice is chronically short of — the shortage behind both stuck fermentations and rotten-egg aromas, and the shortage keeving deliberately makes worse.
Where it is traditional
The places this step belongs to as a matter of practice. It is not a claim of exclusivity — a method can be traditional in one region and perfectly ordinary in another.
What it is done with
Juice reception and settling tanks
A reception tank takes juice as fast as the press makes it so the rest of the plant can work at its own pace, and a settling tank then holds it still and cold while the gross solids fall — the cheapest clarification available to anyone.
Pumps, and what a rough pump does to cider
A pump that shears, cavitates or draws air changes the cider it moves — stripping carbon dioxide, dissolving oxygen and breaking up lees — so the choice between centrifugal and positive-displacement types is a quality decision, not only an engineering one.
Drawing a sample without spoiling the batch
Every sample is a small hole made in the protection around a batch: something goes in, air goes in with it, and cider comes out — so the technique is about drawing a representative sample while putting nothing back and letting in as little air as possible.
Styles it produces
Categories in which this step is characteristic or required. Some name it in their definition; for others it is simply how they have always been made.
Three Counties cider
The shared cider and perry tradition of Herefordshire, Gloucestershire and Worcestershire, defined by a common fruit inventory and by the perry pear orchards that survive nowhere else in comparable numbers.
Cidre Pays d’Auge
The controlled appellation cider of the Pays d’Auge in Calvados, made by keeving from bitter Norman fruit and bottle-conditioned to a low alcohol and a high residual sugar.
West Country farmhouse cider
Cider made on the farm from tannic bittersweet fruit, wild-fermented in wood and sold still and unfiltered, in a tradition whose variability is one of its defining features.
Blended cider
Cider assembled from several cultivars, parcels or vintages so that the finished balance is a made decision rather than an inherited one.
Modern mainstream cider
The industrially produced, consistent, carbonated cider that accounts for most of what is sold worldwide, generally made partly from concentrate and finished to a fixed specification.
Alcohol-free cider
A cider-derived drink at or near zero alcohol, distinct from apple juice in having been fermented, and facing the same problem of what replaces the ethanol.
Low-alcohol cider
Cider at a reduced strength, reached either by removing alcohol from a finished cider or by arranging for less to be produced, with different consequences for flavour.
Pommeau
A blend of fresh apple juice and apple brandy, mixed before fermentation so that the spirit prevents it, then aged in oak.
Graff
A hybrid of cider and beer, fermented from apple juice with malt and usually hops, originating in North American homebrewing rather than in any orchard tradition.
More on juice blending
The two approaches answer the same question at different moments, and the moment matters. Blending juice commits the maker before a single gravity reading has been taken, on the basis of knowledge of the cultivars and of the season. Blending finished cider defers the commitment until everything can be tasted, at the cost of managing many small lots through fermentation and maturation. What co-fermentation buys is integration: the components go through the whole of fermentation, lees contact and maturation together, and the chemistry that happens in that time — tannin binding protein and yeast material, acid setting the microbial conditions, nitrogen pooling — happens to the blend rather than to its parts. What blending finished cider buys is control and information, which is a real advantage and not a small one.
The traditional case is strongest where the fruit itself is the argument. A Three Counties blend built on bittersweets with a proportion of sharps, or a Normandy blend of amer, doux-amer, doux and acidulé fruit, was never assembled from separately fermented lots; it was picked, milled and pressed as a blend because that is how the orchard grew and because the classification exists precisely to describe what each fruit contributes to a joint ferment. The French classification categories are functional descriptions of blend roles. In a mixed standard orchard where several cultivars ripen within days of each other and are gathered together, pre-fermentation blending is not a technique so much as an unavoidable consequence of the harvest.
The modern single-varietal and small-lot approach came from a different starting point — an interest in what individual cultivars actually taste like, and access to enough small vessels and enough temperature control to find out. It also suits producers whose fruit arrives from several growers over a long window, since separate fermentation removes the need to hold juice waiting for the rest of the blend. The honest assessment is that neither method dominates: a co-fermented blend often shows better integration and a softer phenolic profile, while a bench-assembled blend hits its target more precisely and can be adjusted if a component disappoints.
The practical decisions are proportion, timing and how much to hold back. Getting proportions wrong at the press is not recoverable within that batch; if the sharp fraction is too small the whole ferment runs at an uncomfortable pH, and if the bittersweet fraction dominates the finished cider may be more astringent than any subsequent treatment can comfortably fix. Many makers therefore blend most of the crop at the press and ferment a small proportion of each cultivar separately, keeping a set of components with which to correct the main blend later. That is a hybrid rather than a compromise, and it is what a good deal of contemporary practice actually looks like.
Related processes
Steps that sit alongside this one, replace it, or depend on it having been done.
Blending
Blending
Combining separate lots of cider or perry into one, which in cider is the historically normal way of making the drink rather than a remedy applied when single lots disappoint.
Blending
Bench blending trials
Making small measured mixtures of candidate lots and tasting them before committing tanks, because how components behave together cannot be worked out from how they taste apart.
Juice treatment
Acid adjustment
Correcting the acidity of low-acid juice before fermentation, usually with malic acid, and the difference between the pH question and the titratable acidity question.
Harvest
Fruit sorting
Taking rotten, mouldy and damaged fruit and foreign material out of the crop before it reaches the mill, which is the primary control on patulin in cider.
Juice treatment
Juice settling
Letting freshly pressed juice stand cold and undisturbed so that gross solids fall, then racking the cleaner juice off the deposit before pitching.
Blending
Tannin balancing
Setting the phenolic structure of a blend, which means handling bitterness and astringency separately because they are different perceptions produced by different sizes of the same molecules.
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
- What is malic acid and why does it matter in cider — Malic acid is the acid of apples and supplies almost all the sharpness a cider has. It also sets pH, which decides how well sulphite works and how exposed the cider is to spoilage, so it does far more work than its taste suggests.
- What are procyanidins in cider — They are the condensed tannins of apples: chains of catechin-type units whose length decides how much of the phenolic load reads as bitterness and how much as astringency. Two ciders with identical total tannin can taste nothing alike.
- What is yan and why does cider juice run short of it — Yeast assimilable nitrogen is the nitrogen yeast can actually use. Apple juice is usually short of it — in one Virginia survey of 108 samples, 94 per cent fell below the level wine practice treats as a minimum — which is why cider ferments stall more readily than wine ferments.
- How do you adjust the acidity of cider
- What kind of pump should be used for cider, and can a pump damage it
Where to go next
- How cider is made — The whole sequence, stage by stage, with the choices open at each one.
- Cider science — The chemistry and microbiology the methods on this page rest on.
- Troubleshooting — What goes wrong, how to recognise it, and whether it can be reversed.
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.
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.
Institut Français des Productions Cidricoles (IFPC)
IFPC · research institute · retrieved 2026-08-24
The French technical institute for cider production. The authority for the French cultivar classification families, for keeving as an industrial process, and for the pectin and nitrogen chemistry that keeving depends on.
Cider and perry production technical training material
Peter Mitchell / Cider and Perry Academy · reference work · registered as competent for this subject
Searched again on 2026-08-25 and it remains the one printed source here that a bibliographic check cannot fix, because it is not a published work with an edition. It is course material issued to participants of a training programme, so there is no catalogue record to verify, no ISBN, and no lawful public copy. Its state stays `registered` for that reason rather than through inattention.