The UltraLightCooker uses foam panels for support, and was designed by Andrew Kotowski. He built this cooker specifically for a trip to Poland. The objective was to build a simple cooker, light, cheap and easy to carry. It is good for a demonstration and to cook simple meals.
Materials used: Sunshades car and plate of polystyrene (1.5 cm thick)
Weight: 0.5 kg (without the pot).
UltraLightCooker Plus variation
This solar panel cooker has four reflective panels, which focus sunlight typically onto a black frying pan with a transparent Pyrex cover. The pan is placed on a bottom insulator on top of the bottom reflective panel. The advantage of this cooker is its simplicity. It is lightweight, collapsible and easy to carry. This version is optimized for cooker European climatic conditions or more generally between latitude 40° and 60°.
The solar cooker is a green solution. It can be used on a balcony or a terrace as well as a picnic or in the garden. It can also be used in educational purposes or for demonstrations.