Brine/braɪn/ Definition 1 of 3Pro Tip 1/3Food Preservation Brine is often used to preserve food, enhancing flavor and longevity. Homemade pickles last longer when stored in brine. Pro Tip 2/3Salt Concentration Different foods require different brine concentrations for optimal taste. Cheese needs a lighter brine than olives. Pro Tip 3/3Taste Factor Using brine adds a savory or 'umami' quality to foods. Brined chicken has a juicy, savory taste.