Add the chicken stock and prawn shells to a large saucepan and simmer over a low heat for 20 minutes to infuse. Strain the stock through a sieve into a jug or pan and keep warm.
Place the oil in a frying pan over a medium heat, then add the ginger and garlic and sauté for 2–3 minutes. Add the infused stock and the gochujang paste and cook for a further 2 minutes.
Add the mushrooms, followed by the prawns and chicken, and poach gently without boiling for 2–3 minutes.
Meanwhile, cook the noodles according to packet instructions. When soft, put the noodles and spinach in a serving dish and ladle the hot ramen broth over the top. Garnish with the egg, some kimchi, spring onions, edamame and chilli. Season to taste with soy sauce.
