This is a traditional food made during the pig killing festival in February of the lunar calendar. Mix pig blood with glutinous rice, add salt, monosodium glutamate, allspice powder, white wine and chopped green onion, and then pour into pig intestines. Of course, the pig intestines should be cleaned in advance. Then you can cook. When cooking, poke a hole in the pig intestine with a toothpick to prevent it from bursting. I remember when I was a child, there was another way to grind pig blood and glutinous rice into pulp with graphite, which was also delicious.