Store trifles and beer ingredient (7)
I believe the answer is:
toyshop
'store' is the definition.
(I know that toyshop is a type of store)
'trifles and beer ingredient' is the wordplay.
'trifles' becomes 'toys' (I've seen this before).
'and' is a charade indicator (letters next to each other).
'beer ingredient' becomes 'hop' (I've seen this before).
'toys'+'hop'='TOYSHOP'
(Other definitions for toyshop that I've seen before include "Heavenly place for a child perhaps" , "store for kids" , "outlet for childish desires?" , "Establishment selling playthings" , "Where to buy playthings" .)