The coffee you drink doesn't have a plural, but the coffee that coffee dealers exchange has one: arabica coffees, robusta coffees, highland coffees....
'Coffee', either in its base form or as the prepared beverage, is 'uncountable' (like beer, water, sand, rice, light, air, etc) - but like the other examples, becomes 'countable' when it is put into a 'countable container', such as a cup, jar or a bottle. Then you can say, for example '"may we have two coffees, please"? . . .
Sugar, coffee etc are uncountable nouns.However, when talk about different kinds of coffee, we can make it plural as same as foods.
I agree with both Zajac and Jaques
Let's not make this more complicated than it is. The answer is very simply yes. How many coffees did you have this morning? I had five and two juices. The coffee shop offers seven different coffees. Turkish, Greek, Irish, etc., Latte, Cappuccino, etc., Arabica, robusta, etc., etc., etc.
It depends on the context. If we are speaking about several sorts of coffee, we are talking about coffees (of several origins, ...)
It is interesting. Please continue like this I apriciate you. God bless you about your activity. Thank you.
Coffee is like water. Can we have the plural of it? I don't think so.
'Waters' exists, so the conclusion to draw from your answer is that 'coffee' does have a plural.
coffee is a plant. "Two coffee's, please! No sugar!"