Coffee drying systems in Cameroon
What the crop demands, what the country imposes, and what that means for capacity.
Cameroon grows both arabica in the western highlands and robusta in the Littoral, which is unusual and gives processors two quite different products from one country. Both have lost ground over decades of low prices, and both are now being pushed toward speciality positioning where drying control is the difference between grades.
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 coffee drying demands
Coffee is dried in parchment or as whole cherry, and either way the target is a slow, even descent to 10–12 %. Uneven drying is what produces the faded, stinker and mouldy defects that get a lot rejected at the cupping table, and a lot is graded on its worst beans rather than its average.
Harvest calendar
October to January for both crops, in regions with quite different rainfall — the western highlands are drier at that point than the Littoral.
The working campaign window as the trade runs it. It shifts a fortnight either way with the rains.
Process parameters
| Parameter | Value |
|---|---|
| Drying temperature | 45–55 °C |
| Final moisture | 10–12 % |
| Yield (fresh : dried) | 5 : 1 |
| Cycle time | 18–30 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 8 tonnes of fresh product a day, at a yield of 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 speciality and bulk buyers. Arabica from the Bamiléké highlands has genuine speciality potential, which is realisable only if defect counts come down.
Frequently asked questions
Does Cameroon really grow both arabica and robusta?
Yes — arabica in the western highlands and robusta in the Littoral, which is unusual for a single country. Both dry to 10–12 % moisture at 45–55 °C over 18 to 30 hours, but it is the highland arabica where speciality pricing is realistically available if defect counts come down.
What stops Cameroonian arabica reaching speciality grades?
Defect counts, which come from uneven drying. Faded, stinker and mouldy beans all originate there, and speciality buyers cup and reject on the worst of a sample rather than the average. Holding 45–55 °C evenly across the load through an 18 to 30 hour cycle is what brings the counts down.
What is the cycle for coffee?
18 to 30 hours at 45–55 °C down to 10–12 % moisture. It is a deliberately slow descent: above 12.5 % the parchment moulds in storage, below about 9 % the bean loses aroma and the weight the exporter is paid for.
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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