Method for operating a domestic cooking appliance and domestic cooking appliance

A household cooking appliance comprising

• a cooking chamber,
• a food handling device for handling food located in the cooking chamber with a plurality of parameter configurations, wherein the food is able to be treated locally differently by at least two parameter configurations,
• a sensor which is directed into the cooking chamber for determining distributions of a surface property of the food, and
• a data processing device for operating the household cooking appliance by:
• a) operating the food handling device in a p-th iteration step, where p≥1, for a predetermined period of time with a q-th parameter configuration, where q≤p,
• b) in response to the predetermined period of time expiring, determining with a sensor directed into the cooking chamber a p-th measured value distribution of a surface property of the food,
• c) comparing the p-th measured value distribution with a (p−1)-th measured value distribution recorded before step a), and calculating therefrom a pattern of change and storing the pattern of change,
• d) calculating for each stored pattern of change a respective assessment value which represents a difference between a deviation of a target distribution from the measured value distribution and a deviation of the target distribution from a prediction pattern, with the prediction pattern representing a superimposition of the measured value distribution with the respective pattern of change,
• e) setting the parameter configuration having a corresponding assessment value that satisfies at least one predetermined criterion,
• f) calculating for the p-th measured value distribution a quality value that specifies a deviation of the measured value distribution from the target measured value distribution, and
• g) based on the quality value having a smaller deviation from the target measured value distribution than the (p−1)-th quality value, returning to step a) while maintaining a current parameter configuration, and
• h) based on the quality value having a larger deviation from the target measured value distribution than the (p−1)-th quality value, setting a new parameter configuration, and thereafter returning to step a).