Espresso drinking method how to drink espresso?

Some people say that a cup of Espresso should be drunk in three mouthfuls. in fact, three mouthfuls is just a general term, usually refers to three layers of taste, there is no need to burn out a mouth bubble must drink three mouthfuls. The first sip is the taste of Crema and pure coffee, which is very mellow and exciting; the second sip is slightly sweet coffee, which is soft and palatable; the third mouthful is with the small coffee powder left at the bottom of the cup, with strong aroma and aftertaste of coffee, followed by a long aftertaste