The invention relates to a device for heating the outside of food particles, comprising a substantially cylindrical tube extending with a substantially horizontal axis, heating means for heating the tube on the outside, drive means for driving the tube in rotation about its axis, supply means for supplying food particles for heating to the interior of the tube in the vicinity of a first end of the tube, and discharge means for discharging the heated food particles from the second end of the tube. The invention is based on the product being heated briefly by contact heating in a rotating tube, being carried along by the rotating part and detaching from the wall at a point in time due to gravity in combination with the rotating movement, and thereby coming loose from the other part of the tangle of meat.