Latte art: Difference between revisions

Latte art is a mixture of two [[colloid]]s: the [[crema (coffee)|crema]], which is an [[emulsion]] of coffee oil and brewed coffee; and the 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 [[Chemical stability|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<ref>{{cite web| url=https://www.coffeecaller.com/ | title=Coffee Caller | accessdate = 14 November 2019}}</ref>.