case of a lid 10 which in the plan view has a substantially circular disk shape overall the vessel 6 has a vessel wall 12 which extends vertically upward from the base region and which at the vessel opening merges into a radially outwardly protruding vessel rim 13 the vessel rim is formed in the shape of a circular line section with respect to a vertical cross section see fig6 more preferably in the shape of a semicircular line having a vertically upwardly directed curved surface 14 on the underside i e in the association position facing the vessel interior the lid 10 is provided with a circumferential collar 15 which extends substantially coaxially with respect to the vertical axis x at the base of the collar 15 a radially outwardly extending lid edge 16 is suitably formed along the collar edge rim that faces the vessel interior in the association position the lid edge extends with respect to a vertical section according to fig6 in conformity with the vessel rim 13 in the shape of a circular line section more preferably with a concentric curvature with respect to the vessel rim 13 in the association position of the lid 10 in the association position the lid 10 is supported via its lid edge 16 on the vessel rim 13 see fig5 although not illustrated a seal in particular for the fluid tight arrangement of the lid 10 on the vessel 6 is provided on the lid 10 or in the region of the vessel rim 13 such a seal is usually made of a soft plastics material for example a thermoplastic elastomer in particular during operation of the kitchen appliance more especially during.