One knife flow

Complete the water injection process at one time. Refers to one-time uninterrupted water injection after steaming to fully extract the aromatic substances in coffee. The time is usually 2-3 minutes. Methods By controlling the water quantity and flow rate, the substances in different stages of coffee were continuously extracted to balance the flavor and taste, but the flavor deviation of coffee could be controlled by controlling the water flow rate and injection mode in different time periods. Full extraction in the first stage makes the taste more refreshing, sweet and sour, and full extraction in the second stage makes the taste more mellow, thick and bitter.

Ternary form

That is, the whole water injection process is divided into three sections, including steaming in the first section. There will be two water cuts in the middle, so as to adjust the flavor ratio of the front, middle and back, and the layering is clear. Compared with one-knife flow, it has higher adjustability and can adapt to most coffee varieties.

The same three-stage formula can adjust the flavor ratio of the first, middle and last three stages, and adjust the extraction by cutting off water. The requirements for the control of flow and water flow are relatively high. For example, the proportion of water injection in the second stage can be increased to increase the flavor of the first and second stages, or the proportion of water injection in the first and second stages can be decreased to increase the third stage to increase the strong flavor of coffee.

Four-six punching method

20 16 Coffee Brewing World Champion's "Four-Six Brewing Method". That is to say, the first brewing is divided into five stages of water injection, the first and second stages account for 40% of the total water injection, which determines the trend of coffee flavor (balance between acid and sweetness), and the third, fourth and fifth stages account for 50% of the water injection, which determines the taste of coffee, so it is called the four-six method. It is suggested that beans with high sweetness and hardness can be used, but this hand washing method is controllable and all kinds of beans can be tried.