The invention relates to a lunchbox for storing, transporting and heating food, in particular food prepared for consumption. This should be easy to handle.The lunchbox comprises an upper shell (1) and a lower shell (2) which connected to one another in a hinged manner on one longitudinal side, wherein a closure is provided on the opposite longitudinal side. A shell having a circumferential and L-shaped angled edge region is arranged in the lower shell (2), which is assigned a thermal insulation and a heating element, wherein a groove for receiving a seal is formed in the circumferential edge region of the shell.