Do you know the presoaking of the espresso coffee machine?
What is pre-immersion? To put it simply, before extracting the coffee, let a small amount of hot water wet the pressed powder, releasing carbon dioxide, making the whole pressed powder tighter, and then accept the extraction of 9 pressures of hot water.
Prepreg has existed since the birth of espresso, and it is not a new thing invented in modern times. For the earliest pull-rod machines, the prepreg function was natural. When making coffee, pull down the pull rod (lever), lift the piston, the hot water enters the cavity and the filter bowl, and the hot water touches the coffee cake and begins to presoak, and the pull rod is not released until the desired pre-soaking time is completed. The piston begins to press down under the action of the spring to realize the extraction of coffee.
By the way, the pull rod machine does not need to relieve pressure, because when the piston reaches the bottom of the cavity, the pressure of the spring is already very small.
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Coffee has its own taste only when it is roasted.
Roasting raw coffee beans is called coffee roasting, roasting is the source of coffee flavor, raw beans can not be drunk without roasting. Roasted coffee beans determine 80% of the taste of coffee, the roasting process is very tricky, not roasted, the fire is too strong, then the outer ripe endogenesis, the fire is too weak, then the inner ripe overcooked. Coffee beans are roasted both inside and outside, and controlling the heat is the key point. Good baking energy
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When can I stop roasting when coffee is roasted?
When do you want to stop baking? It can be judged from the following points: 1. Color of coffee beans: because coffee beans show different colors when roasted to different degrees, color becomes the most commonly used basis for baking depth, which can be applied to most coffee beans, but some coffee beans are special. Kenya beans, for example, are much darker than ordinary coffee beans.
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