The secret of Italian-style condensed common sense to be perfect crema

The secret to perfect crema

While machinery is an important factor in making coffee or espresso with a delicious crema, other factors besides machinery also play a decisive role in making "Schümlikaffee" (Swiss for crema).

Crema has a thick golden foam, composed of countless oils, proteins and various sugars, and most of the mellow aroma of espresso.

Recipe determines coffee quality

The more fat a coffee recipe contains, the more unstable crema becomes. For this reason, espresso coffee is often mixed with some Robusta coffee beans, because these coffee beans contain only about 10% fat compared to high-quality, high-flavor Arabica coffee beans, which contain about 16%.

Clean coffee cups

If the coffee cup is dirty and there is oil left on the inside of the cup wall, crema will also quickly fade due to the reduction of surface tension.

Source: Coffee worm

Article address: http://www.coffeebug.org/knowledge/brewing/111.html