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What Is Development Time Ratio in Coffee Roasting?

Writer: Kühne Kaffee
Kühne Kaffee
Aug 10
1 min read

Definition

Development time expressed as a percentage of total roast time.

Why it matters

Phase timing gives roasters a shared framework for comparing how a profile progresses.

How it is measured or recognized

Log the relevant start and end events consistently, then calculate elapsed time or percentage.

Roasting tip

Use phase metrics as comparison tools, not universal recipes or substitutes for sensory evaluation.

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