Berries are a Fruit that can be found on Berry Bushes. They are very common around grasslands and a good source of food early on. Berries are excellent filler ingredients for recipes in the Crock Pot, since they do not produce many dishes on their own. It is recommended that berries are kept raw (as they will spoil twice as fast when cooked) and only cooked when ready to eat.
Notably, Gobblers will eat Berries from Berry Bushes that have not yet been picked (or anywhere else they can find them).
Since berries are easier to get than other fruits and vegetables they're also a good way to get Manure by leaving a stack of berries near some Pigs. The pig will eat the berries over time and turn it into manure.