What is tart cherry juice?

Cherries are a member of the stone fruit family and can meaningfully contribute to dietary intakes of dietary fiber, vitamin C, and potassium.^[1] Stone fruit are fruits that consist of a thin outer layer, edible flesh, and a hard stone that encloses a seed. Cherries are grouped into two major types: sweet (Prunus avium L.) and tart (Prunus cerasus L.) cherries.^[2] The latter are processed to produce tart cherry juice and tart cherry juice concentrate. The scientific interest in tart cherry juice is primarily due to its rich content of polyphenols, particularly anthocyanins, which possess antioxidant and anti-inflammatory properties.^[3]