Latte art microfoam, which is a foam of air in milk. Milk itself is an emulsion of butterfat in water, while coffee is a mixture of coffee solids in water. Neither of these colloids are stable – crema dissipates from espresso, while microfoam separates into drier foam and liquid milk – both degrading significantly in a matter of seconds, and thus latte art lasts only briefly. Latte art requires first producing espresso with crema and microfoam, and then combining these to make latte art. See microfoam: procedure for how microfoam is made; this article concentrates on the latte art once the foam
Caffè crema Caffè crema Caffè crema (Italian: "cream coffee") refers to two different coffee drinks: As a colorful term it generally means "espresso", while in technical discussions, referring to the long drink, it may more narrowly be referred to as "Swiss" caffè crema. In addition, there's also Italian iced crema caffè. Variant terms include "crema caffè" and the hyperforeignism "café crema" – "café" is French, while "caffè" and "crema" are Italian, thus "café crema" mixes French and Italian. "Caffè crema", and the English calque "cream coffee", was the original term for modern espresso, produced by hot water under pressure, coined in 1948