Meet the PhotonGrill: a solar cooker that lets you cook your food outside without any additional fuel source but sunlight. PhotonGrill fits in a backpack and is easy to set up. It reaches high temperatures (500-degree F) in about 5 minutes. You will be able to boil, steam, bake, and fry your food with this.
PhotonGrill is compatible with PowerPot as well, so you can charge your smartphone with it. The above video shows what this solar cooker has to offer. More information is available here.