A microwave heating sheet includes a substrate and a heating layer disposed on a first surface of the substrate. The heating layer includes a polar solvent that has a boiling point of not less than 100° C. and a polyelectrolyte that is dissolved in the polar solvent.

Methods are generally described herein for structuring food for microwave heating. In some examples, food with high dielectric loss factor is dispersed in a matrix of foods with low dielectric loss factors to promote uniform heating and efficient heating. In other examples, microwave susceptors are sandwiched between layers of food and attached to a handle whereby said microwave susceptors can be removed by pulling on the handle after microwave heating.

A method of manufacturing the microwave oven cooking utensil includes: an upper heating body and a lower heating body each of which absorbs a microwave and generates a heat; and a heating space for heating a food material located between the upper heating body and the lower heating body, the heating being performed from above and below at the same time. Here, the upper heating body and the lower heating body are each formed by including a heat generating part containing ferrite and a molded foam body.

A microwave heating sheet includes a substrate and a heating layer disposed on a first surface of the substrate. The heating layer includes a polar solvent that has a boiling point of not less than 100 C. and a polyelectrolyte that is dissolved in the polar solvent.

A microwave heating construct comprises a base, a wall extending upwardly around the base for defining a cavity for receiving a food item, and a microwave energy shielding element overlying a lower margin of the wall, the microwave energy shielding element having an upper edge including a substantially incurved portion.

An automated, on-demand baking system including a computer controllable injector configured to be operative to programmably inject liquid baking ingredients through a wall of and into a mixing, baking and dispensing container, a computer controllable rotator configured to be operative to programmably rotate the mixing, baking and dispensing container containing baking ingredients, thereby mixing the baking ingredients into a dough, a heating generator operative to cause baking of the dough in the mixing, baking and dispensing container and a controller operative to govern the operation of the computer controllable injector, the computer controllable rotator and the heating generator.

Packaging material includes microwave interactive material and is automatically reconfigurable for selectively controlling transmission of microwave energy through the packaging material. The packaging material is configured to vary, as a function of time, a ratio of microwave energy transmitted through the packaging material. The packaging material is configured so that the microwave energy is automatically selectively transmitted in different ratios.

A microwave heating construct comprises a base, a wall extending upwardly around the base for defining a cavity for receiving a food item, and a microwave energy shielding element overlying a lower margin of the wall, the microwave energy shielding element having an upper edge including a substantially incurved portion.