In a large bowl sift in the powdered sugar, top it with sifted instant dry milk.
Sift in the cocoa powder on top.
Whisk together.
Whisk in the granulated sugar.
Store the mix in an airtight container for up to 3 months or use for peppermint hot chocolate.
Add 1/3 cup of the hot chocolate mix to a mug, stir in 1 tsp peppermint extract, syrup, or candy cane with 1 cup of warm milk and mix in with the hot chocolate mix.