Open to Opinion. There are conflicting views on the subject. The old standard is delay until the later toddler years. The newer data suggest that use as early as 6 months may prevent a kid from developing a peanut allergy.
Peanuts. Most pediatricians will defer introduction of peanuts until a child turns 2 years old, usually as peanut butter. The peanut seeds should not be introduced until the age or 3 or 4. Peanuts are notorious for inducing allergies.