An apparatus (100, 100null) for thermally treating a confectionery mass includes a housing (1) having an approximately vertical axis (2), a core (3) being located in the housing (1) and being arranged in an approximately concentric way with respect to the axis (2) of the housing (1), a plurality of tubes (12) being located in the housing (1), each of the tubes (12) having an approximately vertical axis and being designed and arranged for a tempering medium to flow through them, and at least one deflecting element (13) being designed and arranged to connect the housing (1) to the core (3) such that a flow path of the confectionary mass through the apparatus (100, 100null) is determined, the flow path extending in a transverse direction with respect to the tubes (12), at least a east a part of the deflecting element (13) having a helical shape.