What's the secret of making coffee? Basic knowledge of coffee

1. Boiling will make the coffee bitter. It is recommended that you never boil the coffee directly on the fire, but brew it at a temperature between 90 and 96 ℃ (195 to 205 ℉).

2. Do not reheat the brewed coffee. It is recommended that you brew the coffee each time before drinking it, and only brew the amount you want to drink. The temperature to maintain the best flavor of the coffee is 86 ℃ (185 ℉).

3. Use fresh water to brew. The amount of water in each cup should be 98%. If there is a strange smell in the water, you can consider filtering it with activated carbon.

4. Do not reuse the ground coffee powder, because the coffee powder that has been soaked is the bitter ingredient in the coffee.

5. Please use the correct grinding degree provided by the coffee manufacturer. If the grinding is too fine, it will cause excessive extraction, produce bitterness, or block the brewing apparatus. Insufficient grinding will lead to the coffee as light as water. If the dripping brewing apparatus is used, the dripping process should be completed within two to four minutes, which is the appropriate grinding degree.

6. It is recommended that you use 10 grams (2 tablespoons) of ground coffee powder for every 180 ml (6 oz) of water. No matter how much coffee you want to make, it should be prepared in the same proportion. In addition, you can also adjust the proportion according to your preference, but if you use less coffee powder or grind too fine, the coffee will be light and bitter.

7. the coffee should not be kept on the coffee machine for more than 20 minutes. If you leave it for too long, it will lose its flavor. It is recommended to use an incubator or vacuum pot to keep the coffee warm and fragrant for a long time.