A nutty ingredient of pina colada (4)
I believe the answer is:
cola
'ingredient of pina colada' is the definition.
I can't tell whether this definition defines the answer.
'a nutty' is the wordplay.
I cannot quite see how this works, but
'a' is within the answer.
The remaining letters 'col' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for cola that I've seen before include "Cold drink" , "Fizzy drink" , "Carbonated soft drink" , "pop" .)