Support WBURHey, Baby, Meet Peanuts: How And When To Safely Introduce The FoodPlay02:39Download AudioPatti NeighmondNovember 11, 2016 SharePeanuts and straight peanut butter are a choking hazard for infants, doctors say, but a bit of watered-down puree of peanut butter, starting at around 6-months-old, can help prevent peanut allergies. (Getty Images)