It is safe to try eggs at 1. I just gave my son a scrambled egg the first time he had it. I think peanut butter is safe to try at 1 too. I have been scared to try it yet though ( my son is 14 months). I think just start with a small amount and make sure he doesn't have a reaction. If you have peanut allergies in your family you might want to wait until he is older to try it. Hope that helps.