Each Freestyle is outfitted with about 30 cartridges that contain the proprietary flavor formulas for each brand (ex. Coke, Minute Maid, Fanta, Barq’s). The cartridges, which look like giant printer cartridges, are blended with carbonated water and sweetener, either zero-calorie sweetener or high-fructose corn syrup. Once the customer makes his or her selection, Freestyle will blend the three together to create the right drink. Because you control the pour, customers “can create your own drink by mixing certain flavors,” Farrell said.