Potassium Metabisulfite is a versatile winemaking agent used primarily as an antioxidant, sterilant, and stabilizer. It prevents most wild microorganisms from growing, and it protects both the color, and delicate flavors of wine. Potassium metabisulfite will lose its effectiveness over time, so a good rule of thumb is to replace your supply at least annually. Old metabisulfite can be used as sanitizer.
Potassium Metabisulfite is a versatile winemaking agent used primarily as an antioxidant, sterilant, and stabilizer. It prevents most wild microorganisms from growing, and it protects both the color, and delicate flavors of wine. Potassium metabisulfite will lose its effectiveness over time, so a good rule of thumb is to replace your supply at least annually. Old metabisulfite can be used as sanitizer.
Citric acid is the primary acid found in lemons, limes, and other "tart" fruits. Added to taste, it will provide the extra bite missing in some wines. Recommended dose is to add to taste beginning with 1/2 tsp. per 5 gallons of wine. Citric Acid can also be used as an excellent sanitizer by making a 3 to 1 blend of citric acid and potassium metabisulfite.