A microwaveable food container that incorporates at least one microwave-obstructing movable object. An actuator-induced controlled movement of at least one said movable object serves to controllably vary the microwave power density reaching a material which is located within said food container

Provided are a rotating structure and a container using the rotating structure, the rotating structure including: a pouch coupled to a container while being wounded around a circumference of the container; and a raw material provided inside the pouch, wherein the raw material expands the pouch by being sublimated or evaporated while being heated, and the container is rotated according to expansion of the pouch, wherein the container using the rotating structure couples the rotating structure to the container storing content therein and having a container shape.

A microwaveable food container that incorporates at least one microwave-obstructing movable object. An actuator-induced controlled movement of the at least one microwave-obstructing movable object serves to controllably vary the microwave power density reaching a material which is located within the food container.