Place whole ckn breasts in large pot with carrots, onion, celery, and spices. Add water till just covering ckn & veggies. Cover simmer approx. 2 hrs. Add more water during cooking time if needed.
Discard bay leaves. Remove ckn, cut up or shred, keep warm. Add 4 c. chicken stock, peas, corn, & potatoes. Re-season if needed. Simmer covered for 20-30 min. till potatoes are tender. Add chicken back to pot. To thicken liquid, mix 2 TBL. of cornstarch with 1 c. of COLD water, mix till lumps are dissolved, pour into pot, mix till well blended.