Cocoa drying systems in Cameroon
What the crop demands, what the country imposes, and what that means for capacity.
Cameroonian cocoa is traditionally dried over wood fires rather than in the sun, because the main harvest coincides with heavy rain in the Littoral and South-West. That practice is why Cameroonian beans carry a characteristic smoky note — which a small speciality market values, and every mainstream grinder discounts.
The situation in Cameroon
Often described as Africa in miniature, and for processing purposes that is literally true: rainforest, highland and Sahel inside one set of borders, with harvests that therefore never all happen at once. A chamber in the Littoral can work cocoa, pepper and plantain across a calendar that has no real off-season, which changes the utilisation arithmetic completely.
Growing regions. the Littoral and South-West for cocoa and pepper, the West highlands for coffee and horticulture
What cocoa bean drying demands
Cocoa drying is fermentation completion, not water removal — the reactions started in the fermentation box continue through the first days on the mat, and rushing them locks in acidity and astringency the roaster will taste. Beans must reach 7–8 % moisture slowly. Too fast and the bean is acidic; too slow, or rained on, and it moulds.
Harvest calendar
Main crop September to January, mid-crop April to July. The main crop overlaps the wettest part of the coastal year, which is what forced fire-drying in the first place.
The working campaign window as the trade runs it. It shifts a fortnight either way with the rains.
Process parameters
| Parameter | Value |
|---|---|
| Drying temperature | 50–60 °C |
| Final moisture | 7–8 % |
| Yield (fresh : dried) | 2.5 : 1 |
| Cycle time | 20–30 h |
Sizing starting points from ordinary processing practice, not a validated recipe for your product. Confirm against your own intake and your buyer’s specification.
Worked sizing example
For a unit taking 10 tonnes of fresh product a day, at a yield of 2.5 : 1:
Illustrative figures calculated from the yield and campaign window above. They size a conversation; they do not describe any existing installation.
Fuel available in Cameroon
Palm kernel shell and cocoa pod husk in the south and Littoral, coffee husk in the west, plentiful sawdust around Douala.
- Base load. Palm kernel shell · Cocoa pod husk · Coffee husk and parchment
- Supplement. Sawdust · Palm fibre (mesocarp) · Corn cob · Cotton stalk
See all 27 fuels and their properties
Market and buyer requirements
European grinders, who discount smoke taint, and a small speciality segment that pays for it. Separating the two deliberately is worth considerably more than doing both by accident.
Frequently asked questions
Why is Cameroonian cocoa smoky?
Because the September-to-January main crop coincides with heavy coastal rain, so beans are dried over wood fires rather than in the sun. The smoke note is a by-product of the weather rather than a choice, and mainstream grinders discount it. A controlled 50–60 °C chamber removes the fire from the equation.
Is the smoky character worth keeping?
For a small speciality segment, yes. The commercial gain is in choosing: controlled hot-air drying at 50–60 °C produces a clean bean for the mainstream grinders, and a deliberate smoke step can be applied to the lots that are actually sold as smoky.
What does 10 t/day of wet bean give?
About 4 tonnes a day of dried bean at roughly 2.5 : 1, over a 20 to 30 hour cycle to 7–8 % moisture. Cocoa is dried slowly on purpose — rushing it locks in the acidity a roaster will taste.
Size a unit in Cameroon
Tell us your daily fresh volume and target output, and we will size the chambers, the burner and the fuel available around your site.
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