A beverage dispensing device and methods for dispensing beverages are provided. In one embodiment, the beverage dispensing device includes a housing, a carbonation assembly, a carriage assembly, and one or more flavorant containers. The beverage dispensing device can also include a controller with a UI to allow a user to customize aspects of a beverage. These customizable aspects can include fluid volume, carbonation level, flavorant type, and/or flavorant amount. Based on the customized aspects of the beverage, the beverage dispensing device can dispense an amount of carbonated or uncarbonated water, and can dispense a type and amount of flavorant. Illustrative embodiments of flavorant containers are also provided.