Burnt

Acrid, ashy bitterness that does not clear. A roast fault, and one frequently used deliberately to mask worse ones.

Burnt character is roasting taken past development into pyrolysis. It reads as acrid and ashy, with a harsh bitterness that lingers unpleasantly rather than resolving.

The reason it matters beyond its own unpleasantness is what it is often doing there. A dark roast produces uniform, recognisable cocoa flavour and simultaneously flattens fermentation faults — it is the cheapest available fix for mediocre beans, and it is used that way at scale. A very dark roast on a bar sold on its origin is worth being suspicious of.

Descriptors used
burnt, acrid, ashy, scorched, carbonised
Desirable?
A fault in every context.

Where it comes from

The route by which this note arrives in the chocolate.

    When it is a fault

    Roasting past Maillard development into pyrolysis, producing acrid compounds and destroying aromatic complexity.

    How to tell: Distinguishable from an intentional dark roast by a harsh ashy finish that does not clear from the palate.

    Recorded Source: Royal Society of Chemistry

    Related

    Compared in

    • Smoke vs burntSet against Smoke, which readers frequently believe is the same thing.

    Developed during

    • RoastingThis stage is where the note is created, amplified or destroyed. Acrid, ashy bitterness that does not clear. A roast fault, and one frequently used deliberately to mask worse ones.

    Sources

    • ChocolateHQ editorial synthesisChocolateHQ(citation identity confirmed; passage not re-read)
    • The Science of ChocolateRoyal Society of Chemistry(citation identity confirmed; passage not re-read)