In a medium sauce pan, place the chicken stock, onions, garlic, grated ginger, soy sauce, fish sauce and mirin. Stir, cover and et it come to a boil at medium high – high heat. Then lower the heat to medium and let it simmer for 25 minutes. Taste the soup and add more soy sauce if needed.
Meanwhile, cook the ramen as per the package instructions. I recommend to undercook the noodle a bit as it will still continue to cook when mixed with the soup base. Strain the cook noodles and divide into 4 bowls.
In case the soup base is not ready yet, drain the noodles and cold running water to stop noodles in cooking further. Set aside until ready to use.
Divide the ramen soup base between the four bowls with ramen noodles.
Top with the pak choi, spring onions, sliced chicken breast, boiled eggs, roasted garlic and other toppings you like. Enjoy!