It's generally recommended that you hold off on egg whites and nut butters until 1 yr. We waited on egg whites, but I think we did start with nut butters around 10 mo with the dr's okay. We have no history of food allergies in either of our families, and we didn't give him nut butters very often or in large amounts, and it hasn't been an issue. That's just what we did, though. It's always safest to wait if you're uncertain.