How to Use Sodium Metabisulfite for Wine Making

What is Sodium Metabisulfite?

Sodium metabisulfite is a common wine-making additive used as an antioxidant and sanitizer. It helps to prevent spoilage and unwanted fermentation by inhibiting wild yeast and bacteria.

When to Use Sodium Metabisulfite

• Sanitizing equipment: Before you start, use a solution to sanitize all your tools and containers.
• Before fermentation: Add to crushed grapes or juice to kill wild yeasts and bacteria.
• After fermentation: Add to the finished wine before bottling to prevent oxidation and spoilage.

How to Prepare and Use

• For sanitizing:
  • Dissolve 1 tablespoon (about 15g) of sodium metabisulfite in 1 gallon (3.8 liters) of water.
  • Soak your equipment for at least 5 minutes, then drain well (no need to rinse).
• For adding to wine or must:
  • Standard dosage: 1/4 teaspoon per 5 gallons (about 19 liters) of wine or must.
  • Mix sodium metabisulfite with a small amount of water or wine, then stir into your batch thoroughly.

Safety Tips

• Use in a well-ventilated area to avoid inhaling fumes.
• Wear gloves if you have sensitive skin.
• Use recommended doses only, as excess can affect flavor and health.

Conclusion

Sodium metabisulfite is an essential tool for wine makers, ensuring both sanitation and preservation of your wine. Proper use keeps your homemade wine fresh and safe to drink.