Solar cooker uses sun's rays to cook food. Sun's heat is captured in a container using principle of black body effect, and cooks the food as it is done in an oven. Black painted food boxes are placed inside the collector keeping the food material to be cooked. It can undertake many types of cooking, boiling, roasting, steaming etc., except for deep frying, cooking chapati. Food cooked in a solar cooker remains hot for several hours.