What is sour salt?

Sour salt, also known as citric acid, is a food ingredient commonly used as a flavor enhancer and preservative in cooking, baking, and canning. It is made from natural sources such as lemons and other citrus fruits and is also commercially produced through fermentation of sugar. Sour salt is highly acidic, with a pH level of around 2.2, and gives a sour taste to foods. It can be used to add tartness to soups, stews, sauces, and marinades, as well as in the making of jams, jellies, and pickles. It is also used in cleaning agents and personal care products due to its acidity and ability to dissolve mineral deposits. However, sour salt should be used in moderation as excessive consumption can cause digestive problems and has been linked to tooth decay.