So you do want to hold off on foods they might choke on or foods that might cause an infection like raw or undercooked fish. But you want to get some ground up peanuts into babies before their first birthday. Fish, there's been great research now that giving fish 1-2x a month before their first birthday reduces allergies of all kinds, not just to fish, for the rest of childhood. So be adventurous, and go through milk, eggs, peanuts, treenuts, fish, shellfish, wheat, and soy. Try to get all 8 in. One other tip, though. I don't have solid evidence for this in humans, but if animals are sick and on antibiotics, they're more likely to develop an allergy. So I wouldn't introduce the top allergens when your child is sick.