Even though they’re all found in the same aisle at the grocery store, there’s one key difference between tree nuts (which include almonds, walnuts, cashews, and pistachios, to name a few) and peanuts.

Sesame becomes a “major allergen,” joining milk, eggs, fish, shellfish, tree nuts, peanuts, wheat and soybeans. By Eric Athas If you have a food allergy, or your child does, chances are you spend a ...