Food preparation appliance with tool for chopping

A food preparation appliance comprising:

• a food preparation pot;
• a rotatable tool including a mixing knife;
• a weight-carrying supporting member for carrying a weight of the food preparation pot;
• a sensor disposed in the weight-carrying supporting member and configured to generate a sensor signal during chopping of the food by the mixing knife, wherein the sensor signal corresponds to a plurality of abrupt jumping movements stemming from motion impulses caused by collisions of the mixing knife with hard food ingredients, wherein the collisions result in abrupt acoustic sounds and noise emissions, and wherein the plurality of abrupt jumping movements are not resulting from chopping of a soft food or already sufficiently comminuted food;
• and
• a control unit communicatively coupled to the sensor and configured to determine, based on the sensor signal received from the sensor that a predetermined chopping state of the food has been reached,
• wherein the control unit determines that the predetermined chopping state of the food has been reached based on a monitoring value derived from the sensor signal that corresponds to the plurality of abrupt jumping movements stemming from motion impulses caused by collisions of the mixing knife with hard food ingredients, and wherein the monitoring value is a measure of dispersion of a weight value indicative of a weight of the food in the food preparation pot.