A beverage mixing dispenser device (10) for a bottle (12) having a body (14) and a neck (16) for holding a beverage (18) therein. The device (10) comprises a container (20 ) for insertion into the neck (16) of the bottle (12). The container (20) is for retaining a separate ingredient (22) therein. A removable closure member (24) is connected to the container (20). The removable closure member (24) is adapted to close the neck (16) of the bottle (12). A structure (26) extends through the removable closure member (24) and the container (20), for opening the bottom of the container (20), so that the ingredient (22) can drop down and mix with the beverage (18) within the body (14) of the bottle (12).