In a Dutch oven over medium-high heat, warm 3 Tbs. of the olive oil. Add the chicken and cook, using a wooden spoon to break up any clumps, until no pink remains, about 10 minutes. Using a slotted spoon, transfer the chicken to a bowl. Reduce the heat to medium. Add the remaining 1 Tbs. olive oil to the pot and add the onion. Sauté, stirring occasionally, until the onion is softened, about 8 minutes. Add the garlic and cook for 1 minute more. Add the potatoes, hominy, braising sauce and chicken stock. Cover the pot and cook until the potatoes are fork-tender, 10 to 15 minutes. Return the chicken to the pot, reduce the heat to medium-low and cook, uncovered, for 5 minutes more to blend the flavors. Season with salt and pepper and stir in the cilantro and parsley. Ladle into bowls, garnish with radishes, queso fresco and more cilantro and parsley. Serve hot. Serves 6. Williams Sonoma Test Kitchen