Standard espresso, extraction time in 25 ± 5 seconds, taste strong, acid, sweet, bitter and balanced. When extracting espresso, the last 5-10 seconds or so will extract a large amount of caffeine, caffeine flavor burnt bitter, if you only extract the first section out of the concentrated decaffeinated coffee, taste acidic.

Coffee Effects and Roles

Refreshing: The caffeine in coffee excites the nervous system, the heart, and the respiratory system, relieving fatigue, improving fatigue symptoms, and increasing work efficiency.

Promoting metabolism: Coffee can stimulate the central nervous system, making the body's metabolism faster.

Diuretic: Coffee can promote the body water discharge, so as to achieve the effect of diuretic.