Hot Chocolate Mix

I got the recipe from a 'gifts in a jar' book. Combine the following in a large bowl and then transfer to a wide mouth mason jar:

3 1/2 cups non fat dried milk
1/2 cup cocoa powder
1 cup coffee creamer
2 cups powdered sugar, sifted
pinch of salt

To make one serving of hot chocolate: place 5 tablespoons of hot chocolate mix and add boiling water. Serve with marshmallows, if desired.