What is a "sand cherry"?

Sand cherry, also known as Prunus pumila, is a small fruit native to North America. It grows on the sand cherry shrub, which is found in dry, sandy habitats such as dunes and rocky slopes. Sand cherries are typically small and round, with a deep purple to black skin when ripe. They have a tart and slightly sweet flavor, and their flesh surrounds a single large pit or stone in the center. Sand cherries are commonly used in culinary applications, including jams, jellies, sauces, and desserts. They are also enjoyed fresh when ripe, although their tartness may make them more suitable for cooking or processing.