Second coffee? (7)
I believe the answer is:
instant
This clue is a double definition.
'second' is the first definition.
(I know that instant is a type of second)
'coffee?' is the second definition.
(instant coffee)
(Other definitions for instant that I've seen before include "This coffee comes in powder form" , "Immediate, twinkling" , "Second - point in time" , "Tick" , "Short time; immediate" .)