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.
How Baristas Feel About Starbucks' New Latte Macchiato. Meet the Latte Macchiato. When Starbucks first announced its flat white, there was mild, call it Blonde Roast, chaos: The end of an era for an Australian cult favorite enjoyed by coffee (and milk) obsessives at boutique cafes the world over.