In various embodiments, an apparatus includes a top portion, a bottom portion adapted to receive the top portion to define a space enclosed within the top portion and bottom portion, where the bottom portion includes a conductive structure, the conductive structure configured to receive electromagnetic energy from an EM source. The apparatus may also include an electronic tag configured to encode information about contents of the space. In various embodiments, a heating apparatus includes an electromagnetic (EM) source and a controller configured to: receive data associated with a heatable load, determine heating instructions based at least in part on the received data, and control the EM source based on the determined heating instructions.