Mug with a hollow pumping piece

A mug, the mug comprising a stirring unit connected to a liquid space of the mug, for stirring a beverage contained in the liquid space of the mug simultaneously by the same hand in which the mug is held, and in which mug the stirring unit comprises a pumping space separate from the liquid space, and a pumping device connected to the pumping space, configured to increase and to decrease the pressure of air inside the pumping space in an alternating manner, and wherein a flow channel extends from the pumping space to the liquid space, enabling the flow of the beverage contained in the liquid space from the liquid space to the pumping space and from the pumping space to the liquid space, whereby a liquid flow can be formed in the flow channel, for stirring the beverage in the liquid space by the pumping device, and

• wherein the pumping space is provided in or more of a handle of the mug or between the handle of the mug and the sidewall,
• wherein the pumping device of stirring unit comprises a hollow pumping piece made of an elastic material, fastened to a connecting opening in the top part of the handle and provided with a connecting collar configured to be connected to the connecting opening in an air-tight way, whereby air contained in the pumping piece can flow from inside of the pumping piece to the pumping space inside the handle.