1. Put the green coffee beans in the microwave oven and take them out after one minute. Stir the coffee beans, put them in the microwave oven and heat them for one minute, then take them out.

2. Put the coffee beans cooked by fire in the oven. After putting it in the oven, turn the switch of the oven to 230 degrees for 25 minutes. When you hear the popping sound, take out the coffee beans.

3. After the coffee beans are taken out, wait for the coffee beans to peel and dissipate heat. After the coffee is cold, you can start grinding beans with the coffee machine. A cup of coffee needs 15 beans. You can add the content of coffee beans according to your own preferences. But don't add too much coffee beans.

4. Grind coffee beans into powder.

5. After the siphon kettle is boiled, cook for another 30 seconds and then stir. Turn off the fire in one minute.

6. Wrap the ball with a damp cloth or other cold things, so that the coffee will fall back quickly. Coffee beans can taste better after they are ground into powder. Delicious coffee is ready. You can add sugar or milk as you like. Caffeine can improve the speed of human metabolism, thus accelerating the dissolution of fat, especially suitable for women who love beauty to eat when losing weight.