1. Rehydrate the mushrooms in a bowl of hot water for 10 minutes.
2. In a wok, sauté the chicken cubes in a tablespoon of olive oil, then blot the excess oil with paper towels.
3. Add: the green part of the onion cut into small pieces; ginger cut into thin slices; soy sauce; sake; sugar.
4. Cover the meat with water without drowning it, then increase the heat to bring to a boil.
5. Reduce to low heat for 25 to 30 minutes and add the mushrooms.
6. In a large pot, prepare the soup:
7. Heat 1.5 liters of water after adding the chicken bouillon cubes.
8. Let it heat for 25 minutes, then add the miso soup mix and a pinch of chopped coriander.
9. Wait 1 to 2 minutes, then add the egg and whisk.
10. Let it rest.
11. In another pot, prepare the ramen noodles: boil 1.5 liters of water.
12. Place the ramen noodles in the boiling water for 1-2 minutes to separate them, then add the seasoning packets and let them cook for 2 minutes.
13. In a large bowl, pour a base of the ramen broth, then pour the entire soup.
14. Drain the ramen noodles and add them to the bowl, then add the meat and its accompaniment.