Mad to stop drink appearing in puzzle (8)
I believe the answer is:
bewilder
'puzzle' is the definition.
(I know that puzzle can be written as bewilder)
'mad to stop drink appearing' is the wordplay.
'mad' becomes 'wild' (similar in meaning).
'to stop' is an insertion indicator.
'drink appearing' becomes 'beer' (I am not sure about this - if you are sure you should believe this answer much more).
'wild' going into 'beer' is 'BEWILDER'.
'in' is the link.
Can you help me to learn more?
(Other definitions for bewilder that I've seen before include "Deli brew (anag.)" , "Confuse, puzzle" , "Perplex the wild beer" , "Wild beer tending to confuse" , "Flummox, confuse" .)