Mom Style Swiss Miss
1 cup powdered milk
1/2 cup sugar
6 Tablespoons cocoa powder
Mix them altogether and then sift it together 3 times. This does matter I tried to avoid it but it wasn't mixed as well so just do it and it will be better in the end. Also make sure to put it in a tight-lidded container because the powdered milk can pick up the moisture from the wonderful humidity from this time of year.
I found this recipe on copykat.com, the original was doubled from this but this fits in my old can better than having it doubled.