THIS INVENTION IS RELATED TO A METHOD AND APPARATUS FOR PRODUCING POPPING CANDY WHICH IS FORMED IN MOULDS. IN THE METHOD OF THIS INVENTION A REACTOR (3;3’) WHICH COMPRISES ONE OR MORE TRAYS (1) THAT WILL HOLD THE PRODUCT; ONE OR MORE MOVEABLE TRANSMISSION MEANS (12); ONE OR MORE LIDS OR VALVES (4;4’) PROVIDED AT EACH END OF THE REACTOR TO ACT AS INLET AND OUTLET; ONE OR MORE TWO WAY VALVES (11) TO REGULATE AND MAINTAIN INSIDE PRESSURE OF THE REACTOR (3,3’); COOLING AND HEATING HEATING MEANS (10; 10’). FIG. 1