The production of BJORG rice cakes follows exactly the same process as popcorn: the rice cakes are exposed to a temperature of 280°C for a few seconds, so that they are not cooked but expanded. Under the effect of heat, the volume of rice expands in a round mold giving it the shape of a cake. The fact that the expanded rice grains have managed to stay together is natural. This is due to the carbohydrates present in the product.