In a large soup pot combine broth, bok choy whites, soy sauce, ginger, garlic, scallions and Sriracha. Bring to a boil and lower to maintain simmer for 2 minutes. Stir in ramen and pork, simmering for one minute more. Turn off heat and stir in bok choy green leaves. Let sit off heat for 2 minutes while noodles constitute themselves.
8 cups low-sodium chicken broth, 1 lb bok choy, white parts thinly sliced on the diagonal, green leaves coarsely chopped, 6 tbsps low-sodium soy sauce, 2 tbsps ginger paste, 2 tbsps garlic paste or fresh chopped garlic, 5 scallions (green parts only), sliced on the diagonal, 2 tsps Sriracha, 2 (3 oz) packages ramen noodles, broken to your liking (do not use flavor packet)