Compact Carry Oven

A interplanar cooking machine the shade of Dharrius Clever Marxson, AKA "Diavolo de Design" of Dream Portam invented to support him in his interplanar adventures. It was therefore too expensive, so lesser inventors had to take out some parts in their cheap knockoff redesigns of it if they were to streamline it to the public. These cheaper redesigns would skip on detailing, water and fire production runes, bunsen burner and picnic basket, or removal of filters that made these only usable in specific environments - most people do not adventure, so removal of most filters is always the first resort. Removal of filters would cause the oven to only function in locales such as the Flamewrath Woods but not Everwinter Forests, for example.

Illegal reproductions might be found on the black market that removes even safety features of the oven.

The Cook COven works by drawing in elemental energies of its surrounding environment for reprocessing to imbue or replicate food. It takes the conjure food/water spell, but makes it gourmet!  

Diavolo de Design couldn't tolerate dangerous replicas that'd leave people accidentally blowing up due to his inventions, leading him to sponsor lesser inventors to create safe, cheaper, lower rarity variants of the Cook COven. If Diavolo de Design got a contract for them to pay him a cut from the sales of those lower quality ones, it would be a pseudo-monopoly. The contracts further add to Clever's overall business since he just takes the cut from sales of the CCOven and not anything else they do.