Wine that sparkles as it rises (4)
I believe the answer is:
asti
'wine that sparkles' is the definition.
'asti' can be an answer for 'wine' (Italian wine). I'm not certain of the rest of the definition.
'as it rises' is the wordplay.
'rises' is a reversal indicator.
'it' in reverse letter order is 'ti'.
'as'+'ti'='ASTI'
Can you help me to learn more?
(Other definitions for asti that I've seen before include "- spumante, It. wine" , "town in Italy" , "Piedmontese white wine" , "Italian drunk" , "Italian town producing sparkling wine" .)