Sentence examples for a coffee from inspiring English sources

The phrase "a coffee" is correct and commonly used in written English.
It can be used as an indefinite article followed by a noun ("coffee"), indicating a single cup or serving of the beverage. Examples: - I ordered a coffee and a croissant at the café. - Would you like a coffee or tea with your breakfast? - She grabbed a coffee on her way to work. - He always starts his day with a coffee and a newspaper. - I can't function without a coffee in the morning.