Natural Gas

Salt, as a spice, could be imbued. It had no nutritional value of its own, much as it is critical to life, but could be enhanced to have a single point.

Dust, dirt, and rocks... not so much.

I considered, briefly, taunts that I should have evolved the digestion of the earthworm, that allowed it to eat soil. Or those of rabbits to eat their own dung.

Moisture saving measures, as well. The ability to lick moisture from my eyeballs, for example. There were several cunning desert creatures with evolutions that would help me to survive.

And, as I've pointed out before, all of those required biomass.

Now, there was one plentiful source of nutrients in the Armpit. In two words, human beings. Each human being was about a hundred fifty to two hundred pounds of good nutrition. And I had, while living with goblins, eaten human flesh before. I wasn't above eating those already dead, when I had to.

I wasn't anywhere near that desperate yet.