Heap vs box fermentation

Control. A heap needs nothing but leaves and works at any scale; a box gives repeatability, which is what fine-flavour production depends on.

Why these get confused

Frequently described as interchangeable traditional methods. They produce the same chemistry with very different consistency, and the difference shows up in the finished chocolate.

Side by side

	Heap	Box	Why it matters
Equipment	Banana or plantain leaves and the ground.	Drained wooden boxes, usually in a cascade.	The heap needs no capital, which matters enormously in a sector built on plots of a few hectares.
Evenness	The outside and the core ferment differently; turning evens it out imperfectly.	Fixed geometry and scheduled turning give a much more uniform batch.	Batch variability is a real constraint on how consistent the resulting chocolate can be.
Repeatability	Depends on the judgement of the person doing it.	A protocol that worked last week can be repeated exactly.	This is why almost all fine-flavour production uses boxes, and why origins like Tanzania built reputations quickly.
Scale	Works at whatever volume a farmer happened to pick.	Needs enough volume to fill a box, which usually implies a cooperative or estate.

Choose Heap when

Smallholder production without central infrastructure — which is most of the world's cacao.

Choose Box when

Any production aiming at a consistent, repeatable flavour profile.

When the distinction does not matter

For the underlying chemistry. Both produce the same fermentation; what differs is how evenly and how repeatably.

Compared in

Heap fermentationSet against Box, which readers frequently believe is the same thing.
Box fermentationSet against Heap, which readers frequently believe is the same thing.

Sources

ChocolateHQ editorial synthesis — ChocolateHQ(citation identity confirmed; passage not re-read)