Mayfield Dairy Farms Chocolate Milk is a rich, creamy whole milk full of chocolate flavor. Creamy and delicious, this chocolate flavored milk includes calcium with vitamin D, and it's made with real cocoa. Pour a tall glass of this full fat milk for a midnight snack or delicious drink any time you have a chocolate craving. This Mayfield chocolate milk half gallon keeps this dairy milk fresh and easy to pour. Farmer Owned. Community Loved. Mayfield Dairy Farms has been providing families with delicious, fresh dairy since 1910.