A: Vinegar can be made from a variety of fermentable carbohydrates, including grapes, berries, rice and, yes, apples. While it is fermenting, yeast turns food sugars into alcohol, and if acetic acid ...
First, yeast ferments the sugars or carbohydrates in foods like potatoes, grains, or fruit and converts them to alcohol. Then, acetic acid bacteria (Acetobacter) converts the alcohol to acetic acid ...