Double & Sequential Fermentation

Fermentation split into multiple stages, with an intervention between them: depulping, a water change, a temperature shift, or moving cherries from one tank to another. 'Double fermentation' usually means two stages; 'sequential' covers chains of three or more.

Each stage has its own microbial environment. A whole-cherry anaerobic stage, followed by a depulped washed-style ferment, develops two different aromatic families in sequence — the first emphasizing fruit-wine notes, the second acidity and cleanliness. The producer times each stage separately.

Layered complexity: cups show multiple flavor registers rather than one note, often described as structured and composed.

It's a way to add complexity without pushing any single ferment into defect territory — complexity by staging instead of by intensity.

Multi-layered cups — fruit and wine over a clean acidic spine, depending on the sequence. Expect descriptor lists that read like a tasting flight.

Every extra stage multiplies failure points and labor. Mistiming either stage compromises the whole lot.

Nothing by definition — staging describes structure. Some producers pair a stage with an inoculation or co-fermentation, which is then a separate disclosure.

No external flavors; the layers come from staged fermentation of the coffee's own fruit.

Experimental producers in Colombia, Ecuador and Costa Rica.

Microlot programs at the frontier of processing.

Lots described as 'anaerobic in cherry, then washed fermentation after depulping' — increasingly common language on Colombian experimental lots.