Simply add two tablespoons (one ounce) or one packet of tart cherry concentrate to any liquid - water, cola, seltzer, etc, and you will get the power of 60 fresh tart cherries in a single serving. You'll enjoy a great tasting drink that promotes better health. Leading researchers have found that tart cherries are filled with health promoting compounds. University and private research studies are finding that tart cherries have antioxidant activity/ properties which may provide a number of health benefits. Tart cherries also contain two important flavonoids. They are isoqueritrin and queitrin.