Begin by cooking the ramen noodles according to the package instructions. Drain and set aside.
In a large pot, heat the sesame oil over medium heat. Add the minced garlic and grated ginger, and sauté for about 1 minute until fragrant.
Add the sliced shiitake mushrooms to the pot and cook for about 5-7 minutes, or until they begin to soften and release their juices.
Pour in the vegetable broth, soy sauce, rice vinegar, and chili paste. Bring the mixture to a gentle boil, then reduce the heat and let it simmer for about 5 minutes.
Stir in the chopped green onions and baby spinach, allowing the spinach to wilt into the broth, which should take about 2-3 minutes.
Season the broth with salt and pepper to taste.
Divide the cooked ramen noodles into bowls, and ladle the hot mushroom broth over them.
If desired, top each bowl with a soft-boiled egg and sprinkle sesame seeds on top for added crunch.
Notes
Serve in large ramen bowls and garnish with additional green onions and a drizzle of sesame oil for a glossy finish.