Booze of unknown make? (6)
I believe the answer is:
brandy
'booze' is the definition.
(I know that brandy is a type of booze)
'unknown make?' is the wordplay.
I cannot quite understand how this works, but
'unknown' could be 'y' (algebra) and 'y' is found in the answer.
'make?' could be 'brand' ('brand' can be a synonym of 'make') and 'brand' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'of' is the link.
Can you help me to learn more?
(Other definitions for brandy that I've seen before include "Cognac, calvados, armagnac etc" , "Of a legal entity acting as an individual" , "Marc, say" , "Eau de vie" , "What a hero must drink, according to Dr Johnson" .)