Bring a small pot of water to a boil, gently lower the egg in, and cook for 6.5 minutes before transferring to an ice bath.
In a large pot, cook the ground pork over medium-high heat until browned, seasoning with sea salt and black pepper.
Add the minced garlic, grated ginger, and sliced mushrooms to the pork, sautéing for 2 minutes until fragrant.
Pour in the chicken broth, tamari, and sriracha, bringing the liquid to a gentle simmer.
Add the soba noodles and baby bok choy to the broth, cooking for 4-5 minutes until the noodles are tender and greens are wilted.
Stir in the toasted sesame oil and ladle the ramen into a large bowl.
Peel the cooled egg, slice it in half to reveal the jammy yolk, and place it on top of the noodles.
Garnish with sliced green onions and an extra drizzle of sriracha if desired.