Place pork neck bones in a large stock pot and cover completely with water.
Bring to a boil and let it cook until the water becomes foamy and cloudy.
Turn off the heat and pour everything into a strainer.
Rinse the bones thoroughly under cold water to remove impurities.
This step is critical. It’s what gives you a clean, rich broth instead of something muddy.
Return the cleaned bones to the pot.
Add dried shiitake mushrooms.
Cover with fresh water.
Bring to a low rolling boil and maintain for 12 hours.
You want movement, not a hard boil, just steady agitation to develop that cloudy pork broth ramen is known for.
Strain and store in an airtight container.
Like the tare, the broth benefits from resting a day or two in the refrigerator.