Answer:
The key ingredient of vinegar is acetic acid, which gives it an acidic taste and in pickles it acts as an preservative, ingredient and condiment agent. In pickles it acts as a sour flavouring and preserving agent. It is used as an ingredient in mustard, ketchup and mayonnaise. It is used as a condiment in marinades.
Next Question: Why are eggs, so widely used in bakery products?
Previous Question: Which is The World's Oldest and Most Widely Consumed Alcoholic Beverage?