An induction-heating cooking system, comprising: a central coil convolved in a planar circular configuration; a plurality of peripheral coils having a quarter circle arc configuration arranged around and adjacent said central coil; a plurality of inverter circuitries (48, 50) for supplying high-frequency current to said central coil and each one of said peripheral coils individually; detecting means for detecting the existence or absence of a heated body over said central coil and each one of said peripheral coils; and a drive controller adapted to control said inverter circuitries (48, 50) so that said central coil and each one of said peripheral coils are selectively supplied with the high-frequency current, when said detecting means detects that the heated body is set over each one of said central coil and said peripheral coils, or that a covering area of the heated body over each one of said central coil and said peripheral coils is greater than a given value, wherein when said detecting means detects that the heated body is set over said central coil and each one of said peripheral coils, or that a covering area of the heated body over said central coil and each one of said peripheral coils are greater than a given value, said drive controller is adapted to control said inverter circuitries (48, 50) so as to supply said central coil and each one of said peripheral coils with the high-frequency current having a desired amplitude depending upon a covering area of the heated body over said central coil and each one of said peripheral coils, the induction-heating cooking system being characterised in that said drive controller controls said inverter circuitries (48, 50) so that said central coil is always supplied with the high-frequency current and said peripheral coils are alternately supplied with the high-frequency current according to a timing sequence that generates a convection in the contents of the heated body. a central coil convolved in a planar circular configuration; a plurality of peripheral coils having a quarter circle arc configuration arranged around and adjacent said central coil; a plurality of inverter circuitries (48, 50) for supplying high-frequency current to said central coil and each one of said peripheral coils individually; detecting means for detecting the existence or absence of a heated body over said central coil and each one of said peripheral coils; and a drive controller adapted to control said inverter circuitries (48, 50) so that said central coil and each one of said peripheral coils are selectively supplied with the high-frequency current, when said detecting means detects that the heated body is set over each one of said central coil and said peripheral coils, or that a covering area of the heated body over each one of said central coil and said peripheral coils is greater than a given value, wherein when said detecting means detects that the heated body is set over said central coil and each one of said peripheral coils, or that a covering area of the heated body over said central coil and each one of said peripheral coils are greater than a given value, said drive controller is adapted to control said inverter circuitries (48, 50) so as to supply said central coil and each one of said peripheral coils with the high-frequency current having a desired amplitude depending upon a covering area of the heated body over said central coil and each one of said peripheral coils, the induction-heating cooking system being characterised in that said drive controller controls said inverter circuitries (48, 50) so that said central coil is always supplied with the high-frequency current and said peripheral coils are alternately supplied with the high-frequency current according to a timing sequence that generates a convection in the contents of the heated body.