Here is another portable solar cooker you can use to cook your food and boil water using sun power. The GoSun Go cooker has 14oz capacity and heats to 260C. It can be used to steam, bake, and roasts your meals. It can also boil liquids for coffee, tea, and other purposes.
You get a convenient EVA case to take your solar cooker anywhere. Expected to ship in April. You can find this project on Kickstarter at this time.