Latte art is not reserved to latte coffee only, it also applies for other beverages containing milk foam like cappuccino and hot chocolate. Latte art developed independently in different countries, following the introduction of espresso and the development of microfoam, the combination of crema (which is an emulsion of coffee oil and brewed coffee) and microfoam allowing the pattern; it presumably was initially developed in Italy. In the United States, latte art was developed in Seattle in the 1980s and 1990s, and particularly popularized by David Schomer. Schomer credits the development of microfoam ("velvet foam" or "milk texturing") to Jack Kelly of
Xen Coffee and latte. In Hong Kong, the very first appearance of a siphon coffee maker was in the 1970s, at a coffee shop (which may also be the city's first bona-fide coffee shop) on Patterson Street, Causeway. Xen Coffee Xen Coffee is an independent siphon coffee bar in Hong Kong. Xen Coffee's first coffee shop was in Quarry Bay. Xen Coffee serves highly selective coffee varieties from Africa, Indonesia, Central and South Americas. Xen Coffee was awarded Best Fair Trade Cafe in Hong Kong for its effort as a pioneer in promoting Fair Trade products like chocolate from Ghana, organic coffee