In a pot, bring the chicken or vegetable broth to a simmer over medium heat.
Whisk in the miso paste until fully dissolved.
Cook ramen noodles according to package instructions, then drain.
Add the cooked noodles to the miso broth.
In a separate pan, quickly sauté any fresh vegetables you wish to add.
Slice the pork or tofu and add to the broth.
Prepare soft-boiled eggs by boiling them for 6-7 minutes, then cooling in ice water.
Peel the eggs and slice them in half.
Serve the ramen in bowls, adding broth, noodles, and toppings.
Garnish with green onions, nori, sesame seeds, and a drizzle of chili oil if desired.