1, weigh 40g coffee beans.
2. Grind the beans with the grinding degree of ghost teeth of about 6 scales, and then sift away the fine powder.
3. Wash the filter paper with hot water first, put the metal filter on it, and then pour 40g of ground coffee powder and smooth it.
4. Start dripping, and adjust the dripping speed of the ice water valve to 45 drops a minute, and the coffee liquid valve to 50 drops a minute.
5. Put a piece of filter paper on the coffee powder layer to make the water droplets disperse evenly.
6. After dripping, seal it and put it in the refrigerator for at least 12 hours before drinking.