Sometimes words are left out when the meaning is clearly understood. This is especially true with some (not all)many uncountable nouns—alsonouns, also called mass nouns—and, and countable ones (count noun). You need to look up the word in a dictionary to check if it can be used either way.
"I would like a cup of espresso, please" = "I'd like an espresso For example, please".
He drank fourteen pints of beer last night = He drank fourteen beers last night.
There are many types of wine I enjoy = There are many wines I enjoy
Batter, "batter", [...] is a type of thick liquid = Batter [...] is a (thick) liquid
I would like a cup of espresso, please = I'd like an espresso, please.
He drank fourteen pints of beer last night = He drank fourteen beers last night.
There are many types of wine I enjoy = There are many wines I enjoy
Batter, "batter", [...] is a type of thick liquid = Batter [...] is a (thick) liquid
coffee
[MASS NOUN]
1. A hot drink made from the roasted and ground bean-like seeds of a tropical shrub: a cup of coffee
1.1. [COUNT NOUN] A cup of coffee: we went out for a coffee