Preparation vessel with a cooling device

A preparation vessel comprising a vessel wall, a preparation area surrounded by the vessel wall, and a cooling device allocated to the vessel wall, the cooling device contacting the vessel wall in a heat-conducting manner for cooling a preparation item present in the preparation area, wherein the vessel wall in at least a partial area has a double-walled design, with an inner wall bordering the preparation area and an outer wall that is formed separately from the inner wall and spaced apart from the inner wall by a gap, wherein the cooling device is disposed in the gap, and further comprising a phase change material in the gap, the phase change material being located between the cooling device and the outer wall as viewed in a radial direction from the preparation area to the outer wall, wherein the cooling device is located between the phase change material and the inner wall, wherein a plurality of adjacent heat sinks are arranged consecutively in a circumferential direction of the preparation vessel and on a side of the cooling device facing away from the inner wall, wherein the phase change material adjoins both the cooling device and the heat sinks, wherein each of the plurality of heat sinks have several cooling ribs extending longitudinally in the radial direction of the preparation vessel, and wherein the phase change material also extends between adjacent cooling ribs of each of the plurality of heat sinks, and wherein the heat sinks are spaced from one another by portions of the phase change material that extend in the radial direction from the cooling device to the outer wall.