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.
Here are the major differences between latte, cappuccino, and mocha: 1  Cappuccino â 1/3 espresso, 1/3 steamed milk, 1/3 foamed milk. 2  Latte â 1/6 espresso, 4/6 steamed milk, 1/6 foamed milk. 3  Mocha â 2/5 espresso, 2/5 chocolate, 1/5 steamed milk. 4  Flat White â 1/3 espresso, 2/3 frothed milk.