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
Coffee production in Papua New Guinea Highlands (45%), Eastern Highlands (37%), Simbu (6%), Morobe (5%) and East Sepik (5%). In the late 1990s, the country produced an average of 1.18 million bags annually, of which all were exported. Washed mild "arabica" highland coffee dominates the industry in Papua New Guinea (PNG), accounting for 95% of production, the other 5% being lowland washed "robusta." The "robusta" coffee is of poorer quality, being darker, more bitter, with less flavour that the Arabic variety is generally used for cheaper instant coffee. On the other hand, the higher quality "arabica" coffee is generally sold for making espresso, cappuccino and latte