There is a Phase 2 recipe in the cookbook that uses Hoisin, but I think it's something like a teaspoon for a dish that serves four. So I think Ruth is exactly right. A small amount won't hurt. I figure we treat it like honey, molasses, worcestershire sauce, etc...a small amount is fine, a bit amount is not.
When you get stir fry next time, Melissa, try getting sesame oil and light soy sauce, if they have it. That would be SBD friendly (and yummy!).