Wine makes youngster scour compound (9)
I believe the answer is:
lambrusco
'wine' is the definition.
(I've seen this before)
'youngster scour compound' is the wordplay.
'youngster' becomes 'lamb' (a lamb is a young sheep).
'compound' is an anagram indicator.
'scour' anagrammed gives 'rusco'.
'lamb'+'rusco'='LAMBRUSCO'
'makes' is the link.
(Other definitions for lambrusco that I've seen before include "Medium sweet, semi-sparkling Italian red or white wine" , "Type of Italian wine" , "Sparkling Italian wine" .)