Does vinegar have anything else in it than water and acetic acid?

Answer 1

If it's food grade white vinegar - like you'd buy in the supermarket for kitchen use - no, that's all that's in it.

Answer 2

Yes, vinegar typically contains trace amounts of other compounds, such as flavor compounds, minerals, and proteins, depending on its source. These additional components contribute to the varying flavors and characteristics of different types of vinegar.