👉 Sourberry is a type of berry native to the eastern United States and Canada. It's a small, round fruit that's usually green in color but can also turn red or purple due to its ripening process. The sweet flavor comes from the tart outer skin, which contains enzymes called xylitol and lactic acid. Sourberries are typically used as a natural sweetener in recipes such as pies, cakes, and jams, and they're also often eaten fresh in salads, on