Heat the pot with oil in medium heat, stir fry onion until fragrant, then add Swanson No Added MSG Clear Chicken Broth and somen sauce. Mix well and bring to boil. Add soy milk, cook slightly and set aside.
Add all ingredients in a separate pot, then add the soy milk soup and boil until the ingredients are well cooked. Ready to serve.
An authentic Ishikari Nabe from Hokkaido will include sake lees, butter or milk for richer taste.