This is the recipe I used to use:
8 quart box (10-2/3 cups)Carnation brand powdered milk
6 ounces non-dairy ccreamer (Coffee-Mate)
1 one-pound container of Nestle's Quick
2/3 cup (or more)powdered sugar
mix well. Store in a covered container.
To serve: place 1/3 cup (or more) in a cup and add hot water