A process for the preparation of a product to be cooked in an oven and oven

In a method for preparing a food to be cooked in a baking oven with a muffle, together with the muffle ceiling and floor muffle the food is hot air from above and below substantially perpendicular applied from a plurality of nozzles. The nozzles are arranged in the muffle ceiling and in the muffle bottom, said muffle ceiling, mold bottom and / or food to be cooked can be moved in such a way in its height, that a distance of the nozzles to be cooked is smaller than the 3,5- or 2.5 times a diameter of the nozzle is. As a directed impinging jet is formed. The nozzles may be partially closed to adapt to a size or area of ​​the cooking product.