Double & Sequential Fermentation

An umbrella for protocols that run fermentation in two or more deliberate stages, each with its own conditions — for example an initial aerobic stage in cherry, followed by an anaerobic stage after pulping, or a lactic stage followed by an oxidative stage. The idea, drawn from deconstructed fermentation science, is that each stage can cultivate a different microbial population and set of metabolites, letting the producer stack effects that a single fermentation cannot produce. Details vary widely between producers, and the label covers everything from two-tank workflows to multi-day sequences. Flavor tendencies: layered complexity — combinations of clean fruit, winey depth and creamy texture that single-stage fermentations tend not to produce.