There was no lunch day two, and for dinner I was confined to what I could buy at a gas station. I was worried that I wouldn't get a square meal, but even more worried that I wouldn't fulfill the g.c.f.e.m. challenge. So I was overjoyed to find this item: carne seca, a Mexican beef jerky I've had only once before and have never forgotten. It's almost paper thin with a seriously crunchy texture. Not a leathery or chewy bite to be had, and none of the preservatives so common even in brands that claim to be "natural." The flavor? Green chili.