Combine all ingredients in a large bowl and whisk thoroughly to combine. You may also use a food processor if your powdered milk granules are too large.
Pour into a large airtight container and store in a cool, dry place.
To make a single serving:
Fill your mug halfway with hot cocoa mix, add water or milk, and enjoy!
If desired, add 1 ounce KahlĂșa and top with marshmallows