The degree of grinding of the coffee depends on the quantity filled and the grinding time of the coffee powder
Coffee: 10g - 20sec.; 40g - 25sec.; 75g - 30sec.
Espresso coffee requires a "fine" grind, regardless of the type of bean and the degree of roasting.
Espresso: 16g (2 cups) 20sec; 32g - 25sec; 64g - 30sec.

(amount of coffee - maximum grinding time)