Instant nonfat dry milk
Reliquefy dry milk powder as directed. Add 1/2 cup of fresh
buttermilk per quart as a starter. Let stand at room temperature
until clabbered (overnight). Thoroughly chill, then stir until
smooth and serve. Save some of the buttermilk from each batch as a
starter for the next.
Source: Janet Lee Instant NonFat Dry Milk box label (5/96).
Typed in MM format by Iris Grayson.