Got this from the Glee Gum website. Inside each Make Your Own Chewing Gum Kit, you'll find: chewing gum base (containing natural chicle), confectioner's sugar, corn syrup, two natural flavors, a pan for softening the chicle gum base, instructions, and the story of chicle.
And it's really easy: Soften the chicle gum base, either in the microwave or on the stove. Then you add the sugar, corn syrup, and the flavor packets, knead it a little, and WOW! You've made your own gum! Each Gum Kit makes 30 – 50 pieces of chewing gum.