This is a first-timer’s batch. To make vinegar in larger quantities for more gifts, use a 5-gallon food-safe container. Whatever vessel you use, never fill it more than halfway to allow air to circulate. For best results, choose a wine with low alcohol and no added sulfites, and an unpasteurized starter vinegar like Bragg apple cider.
- 2 750-ml bottles red wine, preferably 10%–12% alcohol by volume
- 1⁄2 cup unpasteurized apple cider vinegar