The invention relates to a product for preparing food, which product (1) is manufactured of heat-resistant, foldable material and into the interior (2) of which product the food is placeable, within the product is arranged one or more intermediate bottoms (3), between the intermediate bottom and a wall (4) of the product is put material producing gas, and to the intermediate bottom are formed holes (5) for transferring the gas into the interior (2). In the product according to the invention, the intermediate bottom (3) is releasably fastened at least at the points of the holes (5) in the wall (4) of the product (1) such that it is releasable by means of heating.
