Harvest
Fruit storage before milling
Holding a gathered crop between harvest and the mill, and managing what respiration, water loss and spoilage do to it while it waits.
Also called Holding the crop, Fruit store, Pre-press storage.
- Stage
- Harvest
- Traditional in
- No single tradition — used wherever it suits
- What it most changes
- Body up
- Safety
- None recorded
What it is
The interval between fruit arriving from the orchard and fruit going into the mill, and the deliberate management of it. Almost no operation presses its whole crop on the day it is gathered: press capacity, labour, tank space and the need to blend cultivars that mature weeks apart all force fruit to wait. The store might be a barn floor, a stack of bulk bins under a lean-to, a purpose-built cool store, or a controlled-atmosphere room shared with a dessert-fruit business. What the fruit does during that wait is not neutral, and the maker either directs it or discovers it.
Why it is used
- Press capacity is almost always the bottleneck in a cider operation, so the store is what lets a harvest that arrives in weeks be processed over months.
- Cultivars in a planned blend ripen at different times, and holding the early ones is the only way to press them together rather than fermenting them apart.
- Fruit gathered in poor weather has to come off the ground quickly whether or not the press is free, so somewhere to put it is a condition of harvesting well.
- For some styles the maker actively wants the changes a hold produces, in which case the store is a processing step rather than a queue.
How it works
- Harvested fruit is still alive: it respires, consuming sugar and oxygen and releasing carbon dioxide, water and heat, so a deep unventilated heap warms itself and accelerates its own deterioration.
- Residual starch continues to be hydrolysed to sugar by the fruit’s own amylases, so a crop that entered the store starch-positive can leave it substantially converted.
- Water is lost by transpiration through the cuticle and lenticels, concentrating the soluble solids so that the juice pressed later has a higher specific gravity than the same fruit would have given at harvest.
- Cell-wall pectins are progressively modified and the middle lamella weakens, so the flesh softens and the fruit mills to a wetter, finer pomace than firm fruit does.
- Every one of those processes runs faster when it is warm, and so does every spoilage organism, which is why temperature is the single most powerful lever available.
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 |
|---|---|---|
| Body | Raises | Transpiration removes water while the solids stay behind, so the juice pressed from held fruit carries more dissolved extract per unit volume and finishes with more weight on the palate. |
| Fruit character | Either way | The green C6 aldehydes of freshly harvested fruit decline during a hold while ester production continues, so the aroma shifts from cut-apple towards a riper, sweeter register without any input from the maker. |
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
Starch
The fruit’s carbohydrate store, unfermentable until ripening converts it to sugar, and the reason picking early costs alcohol and risks a haze that will not clear.
Glucose
The sugar yeast takes first and the smallest of the three in apple juice, which is why the last sugar left in a slow ferment is almost never glucose.
Fructose
The dominant sugar of apple juice and the sweetest of the common sugars, which is why apple juice tastes sweeter than its total sugar figure implies and why a stuck ferment leaves sweetness behind.
Sorbitol
The unfermentable sugar alcohol that pears carry in quantity and apples carry only in trace, and the single reason a fully fermented perry keeps a sweetness a fully fermented cider cannot.
Pectin
The structural polysaccharide of fruit cell walls, which decides how much juice a press releases, whether a cider ever clears, and whether keeving is possible at all.
Patulin
A mycotoxin produced by the blue mould that rots stored apples, regulated in apple juice worldwide, and the clearest food-safety reason not to press rotten fruit.
Organisms involved
Penicillium expansum
The blue mould of stored apples and the principal producer of patulin, the one genuine chemical safety issue that rotten cider fruit raises.
Botrytis cinerea
Grey mould: a broad-host-range fruit rot whose laccase enzyme oxidises phenolics and whose glucans make a juice difficult to clarify.
Monilinia fructigena
The brown rot of apples and pears, recognisable by concentric rings of buff pustules, and a major cause of fruit loss between the orchard and the mill.
What it is done with
Bulk bins, crates and pallets
Fruit arrives in sacks, crates or bulk bins, and the container decides how deep the fruit sits, how well it breathes, how long it can wait and how it will be tipped — which makes it a quality decision as well as a handling one.
Temperature control: glycol, coils and a cold room
Cooling can be applied to the vessel — a glycol jacket or a coil in the liquid — or to the air around it, and for most small producers a cold room, an insulated container or simply a cold building is the cheaper and more reliable answer.
What can go wrong
Faults that begin at this step, or that this step makes more likely. Each one is set out with its causes and whether it can be put right.
Patulin contamination
Contamination of juice or cider with patulin, a mycotoxin produced by Penicillium expansum in rotting apples — a genuine food-safety question rather than a flavour one.
Mould taint
Musty, earthy, cellar-damp or rotten-fruit character carried in from mouldy fruit or from mouldy equipment, and a marker that the patulin question needs asking.
Volatile acidity
The measurable fraction of acidity that can be steam-distilled off, dominated by acetic acid and read as vinegar sharpness in the nose and a hard, hot finish.
Starch haze
A persistent haze caused by starch carried in from under-ripe fruit, which has not yet been converted to sugar and stays suspended in the cider.
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.
Perry
The fermented drink of pears, a tradition parallel to cider rather than derived from it, in which unfermentable sorbitol leaves a sweetness the maker never chose.
Sidra natural
The still, dry, unfiltered cider of Asturias and the Basque Country, wild-fermented from local high-acid fruit and poured from a height to raise a momentary sparkle.
Mostviertel Birnenmost
Austrian pear Most from the Mostviertel, made from the region’s tannic standard-tree perry pears, in which sorbitol leaves a soft sweetness no fermentation removes.
More on fruit storage before milling
A farm barn floor and a temperature-controlled store are not two versions of the same thing. On a barn floor the fruit sits at whatever the autumn is doing, which in a mild wet October in the West Country or Normandy means warm enough for respiration to run fast and humid enough for mould to spread readily between touching fruit; the maker’s controls are heap depth, ventilation, and how often the heap is looked at. In a cool or controlled-atmosphere store, lowering the temperature slows respiration, starch conversion, softening and fungal growth all at once, and reducing oxygen slows them further, so fruit can be held far longer in something close to the condition it entered in. The trade-off is that the changes the barn floor delivers for free — softening, gravity gain, mellowing — are exactly the ones the cold store suppresses, so a maker who wants them has to allow a warming period before milling.
The things that go wrong are mostly mundane and mostly avoidable. A single rotted fruit in a bulk bin spreads to its neighbours by contact and by spore release, so the proportion of rot in a stored crop rises with time rather than staying put — which is the argument for sorting before the store rather than after it. Frost is the other major hazard for fruit left outside in bins late in the season: freezing ruptures cells wholesale, and although a deliberate freeze-thaw is the basis of some ice cider methods, an accidental one on a crop intended for ordinary pressing gives soft, browning, rapidly spoiling fruit. Rodents work through the bottom of a floor heap and wasps and vinegar flies work through the top, both of them opening wounds and both of them carrying Acetobacter from one fruit to the next.
The practical decision is how long to hold and at what temperature, and it follows from what the crop is for. Fruit going into a fresh, aromatic modern cider is held as cold and as briefly as the press schedule allows. Fruit going into a traditional West Country or Normandy blend is held warm and long enough to soften and gain gravity, which is the deliberate version described under sweating the fruit. Fruit gathered wet, muddy or with a high proportion of drops should not be held at all if it can be helped, because the store will amplify whatever the orchard delivered rather than correcting it.
Related processes
Steps that sit alongside this one, replace it, or depend on it having been done.
Harvest
Sweating the fruit
Deliberately heaping or storing gathered fruit so that it softens, loses water and finishes converting starch before it goes to the mill.
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.
Harvest
Ripeness assessment
Judging when cider fruit has converted enough starch, loosened enough on the spur and hardened enough for the store to be worth gathering.
Harvest
Windfall management
Deciding which fruit that has reached the orchard floor can be used, and getting the rest out of the crop before it becomes a patulin problem.
Fruit preparation
Milling
Reducing whole fruit to a pulp so that the press has cell walls it can drain, rather than intact apples it can only bruise.
Juice treatment
Juice storage
Holding unfermented juice sound between pressing and fermentation, by chilling, sulphiting, gas blanketing, freezing or aseptic filling.
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 are apples milled for cider
- When are cider apples harvested — In the northern hemisphere the cider harvest runs from about September to November, with late bittersweets such as Dabinett and Vilberie coming in last. Cider fruit is generally picked riper than dessert fruit, and often gathered from the ground.
- Can you fix a cider that has gone vinegary — Not really. Volatile acidity cannot be removed at small scale, and blending it away only dilutes it. The realistic options are to accept it, to blend a lightly affected batch into a much larger sound one, or to let it finish becoming vinegar.
- What does pectin do in cider — Pectin is the structural polysaccharide that holds fruit cells together. In juice it holds haze in suspension, and it is the molecule keeving depends on: strip its methyl groups and it will gel with calcium and float the nutrients out of the juice.
- Which sugar is most of the sugar in apple juice — Fructose, by a long way. Apple juice carries roughly twice as much fructose as glucose, with a smaller amount of sucrose, and fructose is the sweetest of the three on the tongue.
- Why is sorbitol important in perry — Sorbitol is a sugar alcohol that pears carry in quantity and that Saccharomyces cannot ferment. It passes through the whole fermentation untouched, so a perry can taste sweet while being dry by measurement.
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.
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.
The New Cider Maker’s Handbook: A Comprehensive Guide for Craft Producers
Claude Jolicoeur, Chelsea Green Publishing, 2013. ISBN 9781603584739 · reference work · bibliographic record verified, not opened 2026-08-25
Bibliographic record verified on 2026-08-25 against the Open Library union catalogue: Chelsea Green Publishing, 2013, ISBN 9781603584739, one edition recorded. That establishes the citation points at a real book in a stated edition, which is what a citation needs and is all it establishes. No copy was opened and nothing is quoted from it. The book itself is in print and not digitised in any open collection; where CiderHQ needs a figure from this territory it uses an accessible research source instead and says so.
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.