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
Latte "Caffè latte", "Milchkaffee", "café au lait" and "café con leche" are domestic terms of traditional ways of drinking coffee, usually as part of breakfast in the home. Public cafés in Europe and the US it seems have no mention of the terms until the 20th century, although "Kapuziner" is mentioned in Austrian coffee houses in Vienna and Trieste in the 2nd half of 1700s as "coffee with cream, spices and sugar" (being the origin of the Italian cappuccino). According to the "Oxford English Dictionary", the term "caffè latte" was first used in English in 1867 by William Dean Howells in