Add oil to a large, heavy bottom pot, such as a Dutch oven, saute chicken and then remove from pot, add garlic and white part of scallions, and sweet potato (opt) sautee for a few mins, add chicken/veg broth, and all remaining ingredients, adding chicken back in. Cut heat down to low and allow to slow simmer for at least 15 mins, the longer it "steeps" the more flavorful the broth. If you like it soupier you can add more broth. Serve with a fresh squeeze or lime or lemon juice, the green part of the scallions and jasmine, sticky, or whatever rice or noodles you love! Enjoy!