Acetic Acid is an organic compound in the form of a colourless liquid. It is the main component in vinegar after water and is characterized by its distinctive sour taste and pungent smell. When 100% undiluted, it is called Acetic Acid Glacial. This means it is highly corrosive and should not be consumed unaltered. However, when glacial acetic acid is diluted, it can have medicinal properties, and when it's diluted enough, it can be a food ingredient.