Drink contents of dish? (5)
I believe the answer is:
latte
'drink' is the definition.
(type of coffee drink)
'contents of dish?' is the wordplay.
'contents of' says to take the centre (the letters on the inside of the word).
'dish?' becomes 'platter' (platter is a kind of dish).
The middle of 'platter' is 'LATTE'.
(Other definitions for latte that I've seen before include "Coffee with a topping of frothed steamed milk" , "coffee production" , "Milky coffee drink" , "Coffee beverage" , "Type of coffee" .)