Wine tastier than some (4)
I believe the answer is:
asti
'wine' is the definition.
(I've seen this before)
'tastier than some' is the wordplay.
'some' indicates a hidden word.
'ASTI' can be found hidden inside 'tastier than'.
(Other definitions for asti that I've seen before include "town in Italy" , "Piedmont wine city, SE of Turin" , "Italian product" , "- spumante, It. wine" , "Italian town producing sparkling wine" .)