Cocoa fermentation and drying: a practical guide to protecting bean quality

28 September 2026 · ZARI AGRI

Cocoa quality is shaped long before the beans reach an exporter. Careful pod handling, controlled fermentation, even drying and clean storage all influence flavour, defects and the condition of a commercial lot.

Harvest and open pods carefully

Harvest mature pods and handle them without damaging the tree or the beans. When pods are opened, avoid cutting deeply into the wet beans. Keep soil, stones, metal fragments and other foreign material away from the fermentation lot.

Fermentation needs consistency, not guesswork

Fermentation can be carried out in heaps or boxes. The suitable duration varies with cocoa type, climate, lot size and method, so a single number should not be applied to every farm. Keep lots reasonably uniform and use a documented method from batch to batch.

Dry evenly after fermentation

Drying should reduce moisture to a level suitable for safe storage without scorching or contaminating the beans. Spread beans in manageable layers, turn them regularly and protect them from rain, smoke, fuel fumes and dirty surfaces. ICCO guidance commonly references about 7.5% moisture as a storage target for dried cocoa, but buyers may specify their own acceptance limits.

Prepare a traceable commercial lot

1. Keep farm or supplier lots identified during collection.
2. Do not mix wet beans with already dried beans.
3. Record fermentation and drying dates, weather interruptions and storage location.
4. Use clean bags and keep them off damp floors and away from strong odours.
5. Before export, take a representative sample and confirm the buyer’s requirements for moisture, bean count, defects, residues and documentation.

Why records matter

If a buyer reports mould, smoke taint or inconsistent fermentation, lot records help locate the problem instead of rejecting an entire origin.

Export specifications differ by buyer and destination. This guide supports quality management; it does not replace contractual specifications, laboratory testing or local export rules.