1. In a medium pot over medium heat, warm the oil and add the ground sausage. Cook, breaking up the sausage into small bits until cooked through, but not browned.
2. Add the garlic and ginger and cook for another minute. Stir in the broth, then add the gochujang (if using), tamari and bok choy. Turn heat to a gentle simmer and cook for about 10 minutes until the bok choy is tender.
3. In the meantime, cook your rice noodles according to the package. Once cooked, rinse under cold water and serve into 4 bowls.
4. Add the kimchi to the soup and let sit for another minute to warm the kimchi. Taste and adjust seasonings, adding salt, tamari, gochujang or more kimchi juice.
5. Remove the pot from the heat and serve the Pork Kimchi Soup over the rice noodles.
6. Garnish with green scallions and serve.
