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100g Potassium Bicarbonate

100g Potassium Bicarbonate Used to reduce acid in wine

Ascorbic Acid

Ascorbic Acid is a quick acting anti oxidant used in white wine either in addition to or in place of Potassium Metabisulphite to help prevent darkening. You can taste it so I recommend that you use it sparingly. 1/4 to 1/2 tsp per Gallon.