Tofu Soup with Salmon Head

1.Cut the salmon head into small pieces and then marinate with rice wine, 1-inch piece ginger sliced, and dash of salt. Let sit for 20 minutes.
2.In a Dutch oven add oil and heat on medium high. Once hot add the marinated salmon head and fry. Once pieces are lightly browned remove from pot.
3.Add the green onion, 1-inch piece ginger sliced, and garlic into the pot and sauté until fragrant. Add the fish head back in, 5 cups water, tofu and tomato, and season with salt. Bring pot to a boil and then turn the heat down and simmer for 30 minutes.
4.Add the bok choy and turn the heat back to medium cook for 5 more minutes. Season with salt to taste and enjoy immediately.