Abstract: A milk foaming device comprising a milk channel for conducting milk in a milk flow direction from a milk container to a milk outlet head, a foaming section for converting the milk in the milk channel into a milk foam that contains air, a temperature control element for controlling the temperature of the milk foam from the foaming section, and a return channel that branches off from the milk channel between the temperature control element and the milk outlet head and leads, when viewed in the milk flow direction, to a point in the milk channel upstream of the temperature control element.

Abstract: A filter element for filtering milk in a milk frother, comprising a plate-shaped porous main body, having a first side at which the milk can enter the porous main body, a second side at which the milk can exit from the porous main body, and a lateral side connecting the first and second sides, wherein the surface of the first side is less rough than the surface of the second side, and wherein the first side and the second side are different from one another.