Mix together your seasoning sauce ingredients and set aside.
Add the ground beef to your 12-inch, deep sided everyday pan or skillet. Brown over medium high heat, breaking the beef up as it cooks. When it is quite brown and has some crispy edges to it, add the kimchi, garlic, and ginger.
Over high heat, stir the mixture, scraping the browned bits up from the bottom of the pan, for 3 minutes.
Reduce the heat to medium, add the sausage, Spam, mushrooms, tofu, beans, and bok choy to the pan. Pour the seasoning sauce into the center of the pan.
Add the stock or broth to the pan by pouring it along the side. Raise the heat to medium, cover, and bring to a boil. Cook until the bok choy is crisp tender, about 8 minutes. Stir in the green onions.
If using American cheese and/or egg yolks, add over the stew and simmer -uncovered- for another 1 to 2 minutes, or until the cheese is melted and/or the bottoms of the yolks are barely set. If you'd like the yolks more done, you can spoon some of the simmering broth over them.
Cook the ramen noodles separately. Ladle the stew into bowls, breaking the egg yolks and swirling them into the soup as you serve. Add ramen to each serving, and garnish with radish greens, if desired.