Terminal Decline Roast

Definition

Terminal Decline Roast (TDR) is a roast phenomenon where aromatic and structural development occurs during a sustained temperature decline in the final stage of the roast.

In Plain Terms

Aroma doesn't burst. It opens slowly and holds.

Observable Conditions

— Aromatic development continues after temperature peak
— Cup structure integrates progressively during cooling
— Hot phase shows distinct aromatic presence
— Sweetness becomes more cohesive as temperature drops

Research Status: Active Documentation

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