G.B.
I hear the experts say the longer one waits to introduce nuts to babies the more likely they will not have nut allergies. I would say at 12 months if it's okay with the doc. We did not introduce PB until the kids were 2 here though. It's just too easy to have a choking child. PB and other nut butters are sticky and hard to swallow if they get even the tiniest bit too much in their mouths.