Bring a small pot of water to a boil, carefully lower the egg into the water, and boil for exactly 6 minutes and 30 seconds.
Immediately transfer the egg to an ice bath to stop the cooking, then peel and set aside.
In a medium pot over medium-high heat, add the sesame oil and ground pork, seasoning with sea salt and black pepper.
Brown the pork until fully cooked, then add the minced garlic and grated ginger, sautéing for 1 minute until fragrant.
Pour in the beef bone broth, tamari, and sriracha, bringing the mixture to a gentle simmer.
Add the soba noodles and chopped bok choy to the broth, cooking for 4-5 minutes until the noodles are tender.
Ladle the ramen and broth into a deep bowl.
Slice the jammy egg in half and place it on top of the noodles.
Garnish with sliced green onions and serve immediately.