Once at home, my mother took this soup and gave it to her family. I started working outside this year, and I have less time to go home. I have a bowl of soup with a mother's taste to solve the feelings of homesickness.
Soy beans, soak for one hour in advance.
Bitter gourd, cut in half, go to the scorpion, wash, cut, and the size is moderate.
Pig bones, ribs and keels are all available. I bought a keel here. Wash it clean.
Add water without pig bones, boil for 10 minutes, and have foam on the water. Remove the pork bones, pour off the remaining soup and put in clean water. This way, the blood of the pig bones is passed away, and the soup is clean.
Add soy beans and bitter gourds and continue to lick. During the period, it was found that there was still foam, which could be rubbed off with a spoon.
Finally, the bitter gourd turns yellow, and the soybeans become soft and powdery.