This is absolutely the most important step! Any 'wild' bacteria or mold can spoil the entire batch of wine. Thoroughly wash all equipment (carboy, stopper, fermentation tube, stirrer, funnel) in hot water with dish soap. Then rinse everything very thoroughly several times with hot water to ensure no detergent residues remain. Finally, prepare a disinfecting solution: dissolve 2g of potassium metabisulfite in 1 liter of cold water. Pour the solution into the carboy, cap it, and shake vigorously for a minute to ensure the liquid reaches every wall. Pour out the solution and rinse the carboy TWICE with cold, boiled water. Submerge smaller accessories in the solution for 5 minutes, then rinse.
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