Overview
30g of Potassium Sorbate (Wine Stabiliser/Fermentation Stopper).
Potassium Sorbate is used in home brew wine making as a fermentation stopper.
Add 1 gram (1/2 tsp) per gallon of wine to a glass of warm water or wine. When dissolved add to your vessel and swirl well daily for 2/3 days.
One crushed Campden tablet should also be added to the wine at this stage.