An awesome tutorial on how to build a high powered solar cooker using a Fresnel Lens. Time to find an old rear projection TV on Craiglist.
http://graywolfsurvival.com/84068/solar-diy-building-fresnel-solar-cooker/
This is a companion discussion topic for the original entry at https://peakprosperity.com/building-a-fresnel-solar-cooker/