Iron Gut
While affected by this spell, a creature can't gain any benefit from consuming magical foodstuffs, such as those produced by the goodberry and heroes' feast spells, and it doesn't suffer ill effects from consuming potentially harmful, nonmagical foodstuffs, such as spoiled food or non-potable water. The creature is affected normally by other consumable magic items, such as potions. The creature can identify poisoned food by a sour taste, with deadlier poisons tasting more sour.