How to operate coffee roasting operation process

1. Coffee beans

Coffee beans must be fresh. In the case of extra-strong espresso, the consistency, emulsion thickness and color of coffee extracted from stale coffee beans will be seriously affected, and the taste will be greatly reduced.

2. Baking

Roast the raw coffee beans to make the coffee beans show a unique color, aroma and taste. The taste of coffee depends 80% on roasting.

3. Coffee powder

The coffee powder must be thick enough to keep the extraction process between 25 and 30 seconds. Once the coffee beans are ground, the flavor can be preserved for no more than an hour. In order to keep the coffee fresh, the coffee powder should be ground fresh.

4. Bean grinder

Cone-shaped grinding plates are more average and have a longer life than flat ones, and coffee beans are not heated during grinding. If the temperature is too high during grinding, the coffee will lose its flavor. At present, the cone type and peace type combined grinding plate is the best design. The bean grinder should be often cleaned and kept clean, and the grinding plate should be updated in time, so that the bean can be in full contact with the surface of the grinding plate.

5. Coffee quantity

It usually takes 7 grams of coffee powder and 40 to 65 milliliters of water to make a small cup of espresso. If you want stronger coffee, you can reduce the amount of water. The correct amount of extraction should be between 1 and 1.25 ounces (flushing out 1 ounce in 25 seconds is the best performance).

6. Powder loading and pressing

Coffee powder needs to be flat and smooth, and coffee powder must be evenly distributed in the filter. Usually you can use 5 pounds of pressure powder once, then 30 pounds of pressure once, and then rotate 720 °with 20 pounds of pressure to make the powder surface smooth and smooth.

7. Water

The water used to make espresso must be purified. Some cities need to use trace elements to balance water quality. The water will go bad if it is in the coffee machine for too long. Use a small glass to connect a cup of water in the coffee machine, cool and try, such as the water has gone sour, replace the water in the machine with fresh water.