2 cups powdered sugar
½ cup cocoa powder
3 + ½ cups non-fat powdered dry milk
Mix all ingredients in large bowl. Blend with whisk or use a flour sifter until finely blended. Store in an airtight container.
Use 1/3 cup in a mug, pour in hot water, and stir. Add mini marshmallows or a dollop of whipped cream.