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[Darkfather]

Originally Posted by coffeyfiend

What sort of stipulations does the advantage "Cast Iron Stomach" come with? I assume characters are not protected against poison, but what about a poisonous berry which would have a food value, I presume?

You are correct. Downing a glass of drano is contraindicated - it is a poison with no food value. But berries with food value that are also mild poisons, rotten mean that would sicken a normal person, rye with ergot, or rotten milk are all inside of the meaning of this ability. The game master can choose to allow the adventurer with this racial ability to ignore some of the effects of mild poisons, as long as the poisons would otherwise be nutritious. Death Caps may be out of bounds, but indian corn and puffers are probably in.