Red Wine Vinegar

You can indeed make your own perpetual supply of red wine vinegar. You’ll need to start with at least a bottle or two of unpasteurized wine vinegar of good quality. Open the bottle and use some of it. (This admits air to get the action started.) If the vinegar contains the fermentation organisms you need, it will soon show a film or scum on the surface. Contrary to general belief, you don’t have to wait until it produces jellylike “mother,” which is actually the product of over fermentation