United Dairy Farmers remembers when milk was delivered to the door. Founded by Carl H. Lindner, Sr., United Dairy Farmers (UDF) changed that by launching Cincinnati's first cash-and-carry retail dairy store in 1940. UDF buys milk from area dairy farmers, then processes and packages it for sale. The company has grown into a chain of about 200 convenience stores, located mostly in Ohio, but also in Kentucky and southeast Indiana. It also operates a wholesale ice cream business. Owned and run by the Lindner family, UDF retails its own milk products, Homemade Brand ice cream and frozen desserts, and several other food items. UDF locations also offer in-store ice cream parlors and distribute Mobil-brand gas.