Cocoa drying systems in Ghana
What the crop demands, what the country imposes, and what that means for capacity.
Ghanaian cocoa has a reputation for consistency that its neighbours do not, built on a state marketing system that grades and buys to a published standard. That system rewards quality measurably, which makes controlled drying a straightforward commercial calculation here rather than a speculative one.
The situation in Ghana
Better roads, better power and a deeper domestic market than most of its neighbours, and Tema is one of the region’s best-run ports. The constraint here is rarely logistics and usually raw material consistency: Ghana exports a great deal of semi-processed product that loses value because grading and moisture control are done by eye at the point where they should be measured.
Growing regions. Bono and Bono East for cashew and mango, Ashanti and Western for cocoa, the Volta basin for fish
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 October to March, light crop May to August. The light crop runs into the rains, and that is where mat drying loses beans.
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 12 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 Ghana
Cashew shell from Bono, palm kernel shell in the south, and a substantial sawdust resource around Kumasi.
- Base load. Cashew shell · Palm kernel shell · Cocoa pod husk
- Supplement. Coconut shell · Sawdust · Rice husk · Shea cake and shell
See all 27 fuels and their properties
Market and buyer requirements
COCOBOD and licensed buying companies domestically, and European grinders beyond that. Ghana’s premium rests on defect counts, so anything that reduces mould and smoke taint protects the premium directly.
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The systems that hold this profile
Other crops in Ghana
Raw cashew nut · Mango · Tilapia · Shea · Chilli
Cocoa drying elsewhere
Frequently asked questions
Does Ghana’s grading system change the case for drying?
It makes it calculable. Because beans are bought against a published standard rather than negotiated lot by lot, a reduction in mould and smoke defects converts into price by a known rule — which is unusual, and makes the 20 to 30 hour controlled cycle easy to justify.
When is mat drying a problem in Ghana?
In the May-to-August light crop, which overlaps the rains. A bean rewetted part-way through the descent to 7–8 % moisture moulds, and mould is what the cut test counts. The main crop, falling in the dry season, is far less exposed.
What is 12 t/day of wet bean in finished terms?
About 4.8 tonnes a day of dried bean at roughly 2.5 : 1, over a 20 to 30 hour cycle down to 7–8 % moisture. That is a district-level cooperative operation rather than a farm one, and it is the scale at which per-batch records become practical to keep.
Size a unit in Ghana
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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