I was told my son could have all foods at 1 year. I so was petrified of the dreaded peanut allergy that I waited until we were in the doctor's waiting room for a regularly scheduled check-up to give him peanut crackers for the first time. No problems
Now I'm hearing if there is a family history of allergies, to hold off on certain foods until the child is 3. Obviously, with our Guatemalan kiddo's, we don't have this info. I'd consider if you are like me, and fearful of a scary reaction, consider bringing a small portion of the food to the doctor's office when you are there for a well child visit and offer the food where immediate help is available if there is a reaction. While that probably won't work well with shellfish, anything off limits like peanuts, honey, egg products, etc., should be fairly portable.