What is being talked about: Acidic liquid processed from the fermentation of ethanol in a process that yields its key ingredient, acetic acid.

Vinegar is produced through the fermentation of ethanol by acetic acid bacteria, which converts the alcohol into acetic acid - its key ingredient. This process gives vinegar its characteristic sour taste and acidic properties. Rice oil is from rice bran, orange juice and lemon juice are fruit juices without acetic acid as the primary component.