Potassium Sorbate AKA the "wine stabilizer", dissolves completely in wine to prevent yeast from fermenting. Use in sweet wines, sparkling wines, and some hard ciders prior to bottling to prevent carbonating your wine. It may be added to table wines which exhibit difficulty in maintaining clarity after fining.
Please note: this product will not stop an active fermentation.
Use 1/2 tsp. per gallon.