Soak the neck bones in cold water for 1 hour, changing the water half way through.
Bring a pot of water to boil. Boil the neck bones for 8 minutes. Strain. Rinse and wash each bone under cold water.
In a large stock pot, add the neck bones, onion, green onion, garlic, and ginger slices. Add 8 cups of water.
Bring to a boil. Boil for 10 minutes uncovered. Cover. Reduce the heat to medium low. Simmer for 50 minutes.
While the bones are simmering, mix together all of the seadoning ingredients. Set aside.
In another smaller pot, bring water to a boil. Blanch the cabbage for 1 minute.
Scoop out the cabbage and drain. Add one tbsp of the seasoning mix and set aside.
In the same pot of water, boil the potatoes for 10 minutes. Strain and set aside. Disregard how shitty this picture is.
Uncover the pot of neck bones. Scoop out the onion, green onion, and ginger slices. Add in the cabbage, potatoes, and the seasoning. Simmer for 10 minutes.
Add in the perilla leaves and green onion. Cook for 5 more minutes.