Cranberry juice refers to a beverage made from the fruit of the cranberry plant. The cranberries are harvested, cleaned and crushed into a liquid form that can be consumed as is or used in various recipes. Cranberry juice is known for its tart taste and high nutritional value, containing antioxidants, vitamins, and minerals. It's often recommended to drink cranberry juice as it may help prevent urinary tract infections by acidifying the urine and preventing bacteria from adhering to the bladder walls.