The Food Network and Meals websites provide recipes for making hot chocolate in a jar gifts. The recipes instruct the user to put basic ingredients such as sugar and cocoa mix inside the jar, then leave instructions for the gift's recipient.
The Food Network recipe is for an 8 oz. jar. The jar is set up with marshmallows on top of the cocoa, sugar and cinnamon mix. The instructions are to remove the marshmallows, mix the remaining ingredients, and add 3 tablespoons of the mix per cup of warm milk.
The Meals recipe is for a 2 quart jar. The jar is an even mix of ingredients including marshmallows, dry milk, cocoa and sugar. The instructions are to mix 1/2 cup of cocoa mix into 1 cup of hot water or milk.