Öljenkalvojens
Öljenkalvojens is a Finnish term that translates to "beer film" or "beer skin" in English. It refers to the thin, often foamy layer that forms on the surface of beer as it is poured or exposed to air. This film is primarily composed of proteins and hop compounds that precipitate out of the beer. The formation of öljenkalvojens is a natural phenomenon and is generally considered to be an indicator of good brewing practices, suggesting that the beer has not been overly filtered and retains its natural characteristics.
The thickness and appearance of öljenkalvojens can vary depending on the type of beer and its ingredients.