A device for maintaining temperature in food and drink by means of the induction principle. The device comprises a heating mat (10), on which induction containers and other types of containers for food and drink can be placed, and an energy converter (11) for connection to a power supply (46). The energy converter (11) converts the energy from the power supply to induction energy. The heating mat (10) comprises a hotplate (20) of a heat-resistant, non-metallic material, and at least one heating element (22) for generating a varying magnetic field by means of the induction energy from the energy converter (11).