

SHARING ABOUT COFFEE · 2023/03/20
Why does Robusta coffee produce a better crema than Arabica? Put simply: first, Robusta’s higher acid content gives it a better ability to form crema; second, Robusta has less oil, so its crema stays stable longer than an extraction made entirely from Arabica.
SHARING ABOUT COFFEE · 2022/03/10
How to make a great espresso? What affects the crema of an espresso? Crema is mainly created by air (mostly CO2) in the coffee cells when brewed with a high-pressure coffee machine. It emulsifies the coffee oils in the extract – oil normally cannot dissolve in water, but under high pressure the oil droplets are broken down to microscopic size and can disperse in the water. This emulsion, combined with some CO2 gas, forms the crema foam we are talking about.