Carbonic anhydrase 1 is an enzyme that in humans is encoded by the CA1 gene. Carbonic anhydrases are a large family of zinc metalloenzymes that catalyze the reversible hydration of carbon dioxide.
It is becoming more common that the latte macchiato will have a layer of milk foam on the top of the drink as well. A latte is steamed milk, espresso, and a 1/4 inch of foam ontop. It is prepared in this order: flavored syrup (if applicable), espresso, steamed milk, topped with 1/4 inch of foam.
Also with an optional foam on top. Often macchiatos are not stirred. 1. Latte, in Italian, means milk while Macchiato means marked or spotted. 2. Latte is basically coffee and milk, Macchiato is coffee with milk but the milk is added as a visible mark. 3. Latte, essentially refers to the ingredient of the drink while macchiato refers to the appearance of the drink. 4.