roast machine

What Happens First Crack?

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This is called “first crack”. At this stage, the beans enter an exothermic reaction, releasing built-up energy, steam, and carbon dioxide (CO2) from their core. They spontaneously expand and expel chaff, and start to give off smoke. When should first crack happen? There is no set time that first crack occurs Every roast machine or … Read more

What Does First Crack Mean When Roasting Coffee?

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At around 196°C, the beans will emit a cracking sound from within the drum, not unlike the sound of corn kernels popping. This is called “first crack”. At this stage, the beans enter an exothermic reaction, releasing built-up energy, steam, and carbon dioxide (CO2) from their core Do you have to roast coffee to first … Read more