[Ellendra]

Where does one get, “spoiled wine”?

Take wine (or cider, vodka, beer, or other alcoholic beverage)and leave it open for a few days, then cover it with a cloth or loose-fitting lid. Vinegar needs oxygen to ferment. You'll be able to tell by the smell when it's finished.

Once you have a good vinegar going, you can start a new one using the film that forms at the top of the old one, called the vinegar "mother", to seed new batches. Just float it on the top, don't stir it in.

[outofsalt]

Your science is correct your sensibilities are misplaced! Why allow wine to spoil in the first place? Life's too short. Bebe porque la vida es breve!