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What Is RoR Crash in Coffee Roasting?

Writer: Kühne Kaffee
Kühne Kaffee
Aug 10
1 min read

Definition

A pronounced, often unwanted fall in displayed Rate of Rise, commonly discussed around first crack.

Why it matters

RoR makes changes in thermal momentum easier to see than the temperature curve alone.

How it is measured or recognized

Read the calculated temperature change over a clearly stated interval, with consistent filtering.

Roasting tip

Evaluate the trend with probe behavior, control changes and cupping rather than chasing a cosmetically perfect graph.

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