A refrigerator includes a refrigerator cabinet, a door for providing access to within the refrigerator cabinet, and a beverage dispenser. The beverage dispenser may be positioned at the door. The beverage dispenser includes a water source for supplying water, a beverage flavor source containing a flavor medium and having a flavor source opening with and adjustable size, and a user interface. The user interface is connected to the beverage flavor source to control the amount of flavor medium dispensed by the beverage flavor source through the flavor source opening. The amount of flavor medium dispensed will determine the flavor strength of a flavored beverage after the flavor medium has mixed with water or another liquid.