A mixed beverage product includes a container defining an interior chamber, an agitator mechanism coupled to the container, and a beverage contained in the inner chamber in the container. The beverage may be a coffee beverage, or the beverage may be carbonated water and a base beverage, such as fruit juice, veggie juice, or coffee. The agitator is configured to aerate the coffee beverage to form a foam layer on the coffee beverage, or to mix the carbonated water with the base beverage to form a foam layer on the beverage.