3/4 c  Sugar
1/3 c  Cocoa, unsweetened
3/4 c  Milk
2 2/3 c  Buttermilk
1/2 ts Vanilla

In saucepan, combine sugar and nonsweetened cocoa; add milk and heat. Stir
until sugar dissolves. Cool. Beat smooth buttermilk and vanilla. Combine
with chocolate milk. Chill and stir freeze.

Note: This recipe is for a 1-quart machine. Double or triple ingredients if
needed for your machine.