First Crack and Second Crack

When the beans reach the temperature of 400F during the roasting process, the beans “crack.” The bean develops oils in a process called pyrolysis. The outer part of the beans darkens.

When the beans “crack” a second time, the hot beans are then dumped from the roaster and cooled immediately, usually with cold air. During the process of roasting coffee beans, coffee oil gathers in pockets throughout the bean. This substance is forced out to the surface of the beans of darker roasts, as moisture is lost. Hence darker roasted beans have this oily appearance.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s