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.
A Caffe CaffÃ¨ macchiato is a small simple drink of an espresso shot or double shot marked with a touch of delicious frothy. Milk it is not a latte or a, cappuccino but rather an 'espresso' marked on the top with a dollop of foam to cover the espresso and protect it from. airt is not a latte or a cappuccino, but rather an espresso 'marked' on the top with a dollop of foam to cover the espresso and protect it from air. Though a tiny drink, a Macchiato can be one of the most difficult espresso based drinks to pull off well.