go for a coffee or go for coffee

[dorax]

What is the correct phrase:"go for a coffee" or go for coffee"?

 

[Raymott]

You can use either.

 

[dorax]

Is it "go for a/- coffee" or "go out for a/- coffee"?

 

[GoesStation]

You can use either one.

 

[Raymott]

You can also stay in for a coffee; it's usually much cheaper!