Understand price-increase involving brewed ale (7)
I believe the answer is:
realise
'understand' is the definition.
(I know that understand can be written as realise)
'price-increase involving brewed ale' is the wordplay.
'price increase' becomes 'rise' (I've seen this in another clue).
'involving' indicates putting letters inside.
'brewed' indicates an anagram.
'ale' is an anagram of 'eal'.
'rise' going around 'eal' is 'REALISE'.
(Other definitions for realise that I've seen before include "produce" , "Twig" , "catch on" , "Cotton on" , "effect" .)