I've dehydrated chorizo several times with good results. Blot out as much of the fat as possible with paper towels and keep it frozen until you head to the trail head. It will keep for five days or so without turning rancid if you keep it out of the sun. To rehydrate I soak it in water for half an hour or so and heat, then let it sit in my cozy for five or ten minutes. Yummy!

I agree with the others on chicken; tends to become jerky. I've found ground meats rehydrate better. I've done ground turkey (kind of tasteless to me), ground pork (better), lots of ground beef (good) and ground buffalo (actually bison, and lots better than beef). I've stopped worrying so much about the meat turning rancid. I've had unfrozen dehydrated ground beef last as long as three weeks without going bad -- just my two cents.
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