When you read up on coffee roasting, you come across the terms first crack and second crack. On this page you will learn about the second crack that happens when you roast dark.
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What is second crack?
Second crack is the second pop that takes place when you roast coffee beans. It’s around second crack that the coffee oil really starts to find the surface of the coffee beans. The second pop takes place at dark roasted coffee.
If you roast much longer than second crack, the heat level in the coffee beans is getting so high that you risk them charring on the inside. French roast and Italian roast are two types of roasting where you pass the second crack.
