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Drum Roaster

A type of coffee roaster where a rotating drum that holds coffee beans (or cylinder) is rotated above a heat source.
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What is a drum roaster?

Drum roasters roast a bit slower than air roasters. The drum roaster typically roasts coffee between 10-18 minutes. These machines are common with specialty coffee roasters because they have a high level of control over the main variables of roasting coffee: time and temperature.

A roast profile is what roasters use to determine when to change certain variables with a drum roaster.

The other most common type of roaster is an air roaster, which uses airflow to rotate coffee beans while heating.