Why is Siyang Fat Chicken sour?

Fat chicken acid is normal and contains coenzyme A, so it will have a sour taste.

Fat chicken, one of the famous specialty snacks in Siyang, Jiangsu Province, is red and white, with flexible texture, fragrant meat, neither fat nor greasy, and fresh and tender taste. Farmers' weddings, funerals and celebrations often take fat chicken as the "first course", and guests' evaluation of chefs' skills also focuses on the production of fat chicken.

Fat chicken is a wedding, funeral and festive occasion for farmers. Fat chicken is often regarded as the "first sight", and guests' evaluation of chef's craft is also based on the production of fat chicken. Fat chicken is very particular about making. It is made of lean pork paste, egg yolk, steamed bread crumbs, starch, salt, onion, ginger, pepper, monosodium glutamate and other condiments, and then spread it on a blind with a thickness of about one inch, and then spread fat pork paste, peeled sweet potato paste, egg white, scallion and starch on it with a thickness of about half an inch. When it's done, put it in a steamer. After steaming, the upper layer is as white as jade and the lower layer is as red as agate.