A method for the determination of a turning time of at least one cooking product, to which heat is supplied from one side during a cooking process includes a) determination of a first temperature T.sub.A in the cooking product at the beginning of the cooking process at an initial time point t.sub.A as well as of a set temperature T.sub.E of the cooking product which must exist at the end of the cooking process at the end time t.sub.E; b) acquiring of a first temperature difference between the set temperature T.sub.set and the first temperature T.sub.A; c) determination of at least one actual temperature T.sub.actual in the cooking product at several times during the cooking process; d) acquiring of the time of turning t.sub.T as the time at which a second temperature difference between the set temperature T.sub.set and the actual temperature T.sub.actual reaches a certain fraction of the first temperature difference; and e) outputting a signal when the time of turning t.sub.T is reached.