Rinse 2000g pork femurs and 500g pork belly block under cold water.
2
Place pork femurs, pork belly, 200g pork back fat, 300g onion, 100g leek green parts, 50g garlic cloves, and 50g ginger in a large pot with 6000g water.
3
Bring the pot to a boil, then reduce heat to a simmer. Skim off any scum that rises to the surface for 30 minutes.