The Primrose, originally invented by Roger Bernard, is a cooking unit which has been improved by Bernie Mueller of Mueller Solartechnik to be shipped as a DIY-kit. It is constructed to serve as a little kitchen with the advantages to stay in the shade and stir the food during the cooking process. The working height (91 cms (36 inches)) remains. The cooking unit Primrose resists wind and, with minor modifications, all other weather conditions. The reflector can be put up for easy storage. Once ordered, a richly illustrated multilingual manual comes with the kit.