Could be made into alcoholic drink! (4)
I believe the answer is:
mead
'alcoholic drink' is the definition.
(I've seen this before)
'could be made' is the wordplay.
'could be' indicates anagramming the letters.
'made' anagrammed gives 'MEAD'.
'into' acts as a link.
(Other definitions for mead that I've seen before include "Honey drink; lea" , "Alcoholic drink of fermented honey and water of old" , "Alcoholic drink made with honey" , "US anthropologist, Margaret d. 1978" , "Cornish drink" .)