Red Winecan be stale, corked, or even wine you don't like. Any amount.
Water
Vinegar MotherUse one from another batch of vinegar you made or from a bottle of raw apple cider vinegar with the mother, like Bragg's.
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Instructions
Pour your wine into a clean, wide-mouthed, non-metallic vessel, filling it 1/2 to 3/4 full.
Add half amount of water as you have wine. For example, if you have 16 oz. wine, add 8 oz. water
Add vinegar mother.
Cover the top of the vessel with cheesecloth, coffee filter, or flour sack towel and use a rubberband to hold it in place.
Put your jar in a dark, room temperature location. Cover with a towel to keep out the light.
Check your jars every couple of weeks. Smell and taste to see how it's progressing.
Continue this for a couple of months to let vinegar develop. Smell and taste the solution to determine when it’s the tartness you want and that no alcohol remains.
Strain and transfer to a smaller, narrow neck bottle and seal tightly to keep from oxidizing. Save the mother for a future batch.