4th solid food: Organic Yam 地瓜泥 (過敏)

i want to give my baby as much as he need for solid food. i stick with organic food and got organic yam from Sprouts. i steamed it with rich cooker and blended it with rice. but his started to have rash around his mouth after eating it the 1st day. just like lettuce.  he should be old enough to eat solid food, but perhaps his tummy is just not yet ready for it?