The steps of roasting coffee beans are shared.

1, add coffee beans, and pour in proper amount of raw coffee beans. The baking amount of raw beans is related to the size of the baking container you use. Green coffee beans usually contain about 10% water. At the beginning of roasting, water is first separated from coffee beans.

2. Start baking and pay attention to the changes of baking time and beans.

Preheating starts from (1) 0-3 minutes, and the color of roasted coffee beans does not change much. During baking, the color of coffee beans changes from green to yellow, then to brown, and finally to brown. When the first burst temperature is about 160 degrees, the "Balabala" sound similar to popcorn will appear, and the coffee beans will become larger.

(2) Within 4-5 minutes, the surface color of coffee beans gradually darkens, giving off the fragrance of coffee.

(3) After 6-8 minutes, with the progress of baking, the coffee bean skin began to burst, the color continued to be extremely dark, and a strong fragrance could be smelled.

(4) 9- 1 1 min About the 9th minute, the coffee beans turn brown and the surface of the beans is covered with wrinkles. At 10, the first crackling sound will be heard, and the coffee beans themselves will release heat to make the temperature rise rapidly. Then, after a short endothermic process, the color turns black and brown.

(5) From 12 to 15 minutes, the second sonic boom was faster, and the coffee beans showed oily luster and became brittle. At this stage, its components begin to carbonize, resulting in carbonization characteristics.