To prevent an increase in the size of an instrument accompanying arrangement of a plurality of ferrite cores to each of a plurality of coils.SOLUTION: A cooker 10 includes: a bottomed cylindrical storage part 25; a plurality of coils 29 for induction-heating a pot 15 arranged on an outer surface side of the storage part 25 at an interval in a circumferential direction around an axis B of the storage part 25; a first ferrite core 30A individually arranged to the coil 29; and a second ferrite core 30B disposed over two coils 29 neighboring in a circumferential direction of the storage part 25.SELECTED DRAWING: Figure 7

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