Cold Stabilization
• Process of eliminating the tartrates formed by tartaric acid crystallization.
• Cold temperatures can, when wine is in the bottle, cause this reaction to occur.
• Crystals can appear which is not pleasing to the consumer.
Cold Stabilization Tests
• Freezer test -
• Take a small filtered sample and place in a baby food jar or small mason jar.
• Place in freezer for 12-16 hours.
• Let thaw and if crystals don’t form, wine is stable.
Cold Stabilization Methods
• Cold chill - place wine in an area where temperature is between 140 - 250 F.
• This will normally take 2-3 weeks.
• If these temperatures cannot be achieved, keep at 390 F for a few months.
• Cream of tarter - potassium bitartrate.
• Use 50-100 g/hL of cream of tartar.
• Gently stir into wine and allow to sit at 390F for a week or two.
• Process is called seeding - initiates the crystallization process.
• Crystals can be reused for other wines to seed.