The secret of coffee technology to make perfect coffee

Every detail of a perfect cup of coffee, from buying, baking and grinding coffee beans to brewing and preserving them, is very important.

1. Roasting coffee beans at home: buying raw coffee beans and roasting by yourself is actually a very interesting process. You can get the degree of roasting you want, and the process is not complicated. The specific method is: choose household roasting utensils, the most common is a net with a handle, put 200 grams of 300 grams of raw coffee beans at a time. When frying and baking, the firepower of the stove remains stable, and the net will be moved from side to side, about 6 minutes later, when the coffee bean jump will soon stop. In the process of frying and baking, we should pay attention to: the firepower should not be too strong, otherwise the beans are uneven, strong and light, and the taste is very bad; be patient and do not bake quickly with strong fire, because the bean heart is burnt with bitterness due to excessive baking.

2. Grind coffee beans: grind fried coffee beans into powder, which is an interesting step in coffee time.

● ideal grinding time: before cooking, because ground coffee is easy to oxidize and lose its flavor.

The thickness of ● powder depends on the way it is cooked. Generally speaking, the shorter the cooking time, the finer the grinding powder will be. There are generally three types: fine grinding-fine particles, the same size as granulated sugar; medium grinding-particles between the size of granulated sugar and coarse granulated sugar; coarse grinding-coarse granules, the same size as coarse granulated sugar

There are two kinds of ● family bean grinders: the manual rotary bean grinder, which is suitable for people with small demand and sufficient leisure time, and the electric bean grinder, which can grind coffee powder of various particle sizes and produce 6 portions of coffee at a time.

● precautions: first, reduce the grinding heat, otherwise it will lead to coffee aroma early overflow; second, the particle size should be uniform, otherwise it will lead to the brewing time can not be mastered.

3. Water that makes coffee tastier: water that brews coffee is also important.

● do not use boiled mineral water: because mineral water is "hard water", it is easy to prevent the extraction of caffeine and high-quality tannin bitter ingredients.

● freshly boiled water is a good choice: boiled water on the stove, carbon dioxide is still dissolved, is the best boiling water for brewing coffee. But do not boil coffee, the appropriate brewing degree should be slightly less than 96 ℃.

● can not be used for brewing water: water placed for a while, instant water heater boiled water, hot water bottle boiled water, secondary boiling water, are not suitable for brewing coffee.

● coffee can no longer be heated. When brewing, you should pay attention to only the amount you need to cook each time, and it is best to drink it when it is just cooked. The best drinking temperature of coffee is 85 ℃.