Method to control a quasi-resonant inverter in an induction cooking appliance provided with at least an induction heating coil ; said quasi-resonant inverter comprises a switching device electrically connected to said induction heating coil by a node having a first voltage (VC(t)) which is an oscillating voltage and is indicative of the voltage across said switching device , the method comprising the step of a) providing to said switching device an enabling signal (K1) comprising a plurality of pulses, in order to switch-on and switch-off said switching device for a switch-on period (tON) and a switch-off period (tOFF), b) determining a second voltage (VCmin) indicative of the minimum value of said first voltage (VC(t)) during said switch-off period (tOFF), c) regulating said switch-off period (tOFF) based on said second voltage (VCmin), and d) regulating said enabling signal (K1) based on said regulated switch-off period (tOFF). the method being characterized by : said step b) further comprises: b1) determining a third voltage (VC(te)) indicative of the value of said first voltage (VC(t)) at about the end (te) of said switch-off period (tOFF); said step c) comprises: c1) increasing said switch-off period (tOFF) if said third voltage (VC(te)) is greater than said second voltage (VCmin) and said first voltage (VC(t)) is decreasing. the method comprising the step of a) providing to said switching device an enabling signal (K1) comprising a plurality of pulses, in order to switch-on and switch-off said switching device for a switch-on period (tON) and a switch-off period (tOFF), b) determining a second voltage (VCmin) indicative of the minimum value of said first voltage (VC(t)) during said switch-off period (tOFF), c) regulating said switch-off period (tOFF) based on said second voltage (VCmin), and d) regulating said enabling signal (K1) based on said regulated switch-off period (tOFF). a) providing to said switching device an enabling signal (K1) comprising a plurality of pulses, in order to switch-on and switch-off said switching device for a switch-on period (tON) and a switch-off period (tOFF), b) determining a second voltage (VCmin) indicative of the minimum value of said first voltage (VC(t)) during said switch-off period (tOFF), c) regulating said switch-off period (tOFF) based on said second voltage (VCmin), and d) regulating said enabling signal (K1) based on said regulated switch-off period (tOFF). the method being characterized by : said step b) further comprises: b1) determining a third voltage (VC(te)) indicative of the value of said first voltage (VC(t)) at about the end (te) of said switch-off period (tOFF); said step c) comprises: c1) increasing said switch-off period (tOFF) if said third voltage (VC(te)) is greater than said second voltage (VCmin) and said first voltage (VC(t)) is decreasing. said step b) further comprises: b1) determining a third voltage (VC(te)) indicative of the value of said first voltage (VC(t)) at about the end (te) of said switch-off period (tOFF); said step c) comprises: c1) increasing said switch-off period (tOFF) if said third voltage (VC(te)) is greater than said second voltage (VCmin) and said first voltage (VC(t)) is decreasing. <EOS>