Gygi Root Beer Drink Base at Gygi.com. The crucial ingredient for Homemade Root Beer. All flavor ingredients are approved for use in a regulation of the FDA, or are listed as being generally recognized as safe on the FEMA list. Also contains non-flavor ingredients: artificial colors, waters, gum arabic and vegetable foaming agent. Contains natural and artificial flavors. HomeMade Root Beer Recipe: 5 Gallons of Water 5 lbs. Dry Ice 5 lbs. Sugar 4 oz. Root Beer Drink Base Instructions: Mix water, sugar and flavoring into container and stir well. Place dry ice into liquid and let sit for 10 minutes. Then enjoy.