Add sugar and cocoa to food processor. Pulse until well-mixed. (Or, combine ingredients in large bowl and whisk until well mixed.) Add salt, cornstarch, and cayenne; pulse until mixed. Add powdered milk; process for 20-30 seconds until well mixed. Transfer mix to bowl and stir in chocolate chips. Store in airtight container.
TO MAKE ONE MUG OF HOT COCOA:
Fill 1/3 to 1/2 of mug with cocoa mix. Add hot water or milk and stir until mix is dissolved.
ADDITIONS TO TRY:
--Top with marshmallows or whipped cream and sprinkle with cinnamon, shaved chocolate, or crushed candy canes.
--For a mocha drink, add a shot of espresso before the hot water or milk.
--For spiced cocoa, add 1/4 teaspoon pumpkin pie spice to mug.
--Spike it with a tablespoon of peppermint liqueur or Kahlua.
--Stir in and dissolve a caramel, chocolate square, or chocolate mint.
--Add a cinnamon stick or candy cane for a stir stick.