Blueberries are juicy blue-black fruits that are commonly found from above the Arctic Circle to Florida. Whether cultivated or wild, good blueberries should be plump in appearance. Shriveled or burst blueberries are usually quite tasteless. Blueberries are one of the most popular berries in the United States and can be enjoyed raw with cream and sugar or used in a variety of dishes such as fritters, pies, cakes, muffins, pancakes, and ice cream.