Cook, one seen in bars, left out and drinking hard (4)
I believe the answer is:
chef
'cook' is the definition.
(both can mean someone who cooks)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for chef that I've seen before include "Hotel cook" , "Professional cook" , "Kitchen head" , "Head cook in a restaurant" , "Principal cook" .)