This powder is a common natural preservative that has a tangy citrus flavor. It is prized for that flavor and for its ability to act as a pH buffer. It’s also known as an environmentally benign cleanser and has antioxidant properties. Cooking Notes Comes in a 4 ounce package Commonly used as a flavor preserver in canned fruits and vegetables Enhances the flavor of fruits and soft drinks It is often added to jams, jellies, candies, and canned foods It’s commonly used in cheese making, particularly for mozzarella It's frequently used in beer and wine production to regulate the pH of the brew