Non-sparkling wine is not made with this (5)
I believe the answer is:
still
'non-sparkling wine is not made with this' is the definition.
The definition suggests a singular noun which matches the answer.
This is all the clue.
Can you help me to learn more?
(Other definitions for still that I've seen before include "... [STRONG LIQUOR] produced by this" , "Motionless, inactive" , "Immobile" , "Retort; nevertheless" , "Static photograph" .)