After boiling the internal organs, slice into long strips. Separate the intestines.
In a pan or wok, pour the cooking oil and put the intestines. Stir fry occasionally until it becomes crispy.
Remove the crispy intestines from the wok and set aside.
Remove also some of the cooking oil from the pan and leave only about 1 tablespoon.
Saute the garlic, onion, pork fat and pork meat.
After about 1 minute, put the internal organs except the crispy intestines.
Then pour the vinegar, pepper, and a small amount of water and simmer until the meat is tender.
When the liquid has evaporated and almost dry, pour the pork blood in the wok.
Stir constantly until the bloods consistency becomes thick. Put the green chili peppers.
Add sugar and salt to improve the taste and don't forget to add the crispy intestines before serving.