It has a head and hops (4)
I believe the answer is:
beer
'it has a head and hops' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for beer that I've seen before include "The standard English drink" , "Hop-flavoured drink" , "Fermented alcoholic beverage" , ""Give me a woman who loves __ and I will conquer the world" (Kaiser Wilhelm)" , "Hop drink" .)