Milk foam is the essence of testing a barista's basic skills
More baristas often because the milk foam is not dense enough, the surface milk foam due to mutual extrusion and cracking, not only affects the taste, but also has no way to make good-looking pull flowers. In fact, whether it is the pursuit of good-looking flowers or the pursuit of smooth taste, the density of milk foam is very important, coffee is the foundation and soul, milk foam is the essence of testing a barista's basic skills.
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Stewing is the most important part of hand-brewed coffee.
Stewing is the most important part of hand-brewed coffee, and the steaming time is directly related to the taste of a whole cup of coffee. Generally speaking, the steaming time of light roasted coffee should be extended to 30-40 seconds, the steaming time of moderately roasted coffee is 20-30 seconds, and the steaming time of medium-deep roasting is 10-20 seconds. The finer the grinding, the shorter the steaming time.
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The crema in a cup of ESP is actually made up of grease and foam
The crema in a cup of ESP is actually made up of grease and foam, while grease is divided into two forms. The oil is liquid and the fat is solid. The presence of grease can destroy the structure of the foam and cause crema to disappear quickly in a few minutes. Since the surfactant in coffee is dissolved in water, the surfactant of the grease surface will be pulled off the surface of the foam together with the water, causing the foam to change.
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