by Howie Hart » Fri Feb 02, 2007 12:16 pm
First of all, make sure the wine is clear and stable - nothing going on. Remove 1 bottle of the wine (750ml) and dissolve 2 teaspoons of sugar in that wine. See how it tastes. If you want it a bit sweeter, dissolve another teasppon, and so on. Each 2 teaspoons of sugar will add about 1% sugar. When you decide how sweet you want it, measure out the sugar for the entire batch. 1 cup of cane sugar will yield about 1% sugar in 5 gallons (same as 2 teaspoons in 1 bottle). Dissolve the sugar in a small quantity of the wine. Add 2 teaspoons of potassium sorbate. Add Potassium metabisulfite to give a level of about 80ppm SO2. DO NOT USE sodium bisulfite. After bottling, allow 4-6 weeks for the sugar to stabilize before drinking.
Calculation of Sulfur Dioxide (SO2)
Potassium metabisulfite, 1 gram = 150 ppm in 1 gallon, 30 ppm in 5 gallons
Potassium metabisulfite, ¼ teaspoon = 225 ppm in 1 gallon, 45 ppm in 5 gallons
1 Campden tablet contains 0.55 grams potassium metabisulfite, yielding 75 ppm SO2 to one gallon of must or wine