The duck blood is cut into thinner pieces and boiled in warm water for 1 minute. If it is used for soup, I usually add salt to cook. Today, because it is fried duck blood, so there is no salt. Cut the onions, sweet peppers and garlic for later use. If there is garlic, it is better. Put a little oil, pour the onion, sweet pepper, garlic together into the pot and stir-fry, add some salt and stir-fry, pour in soy sauce and duck blood. Stir gently, boil over medium heat for half a minute, add a little sugar, and mix well.