Since the Sui and Tang Dynasties, the society has been relatively stable and the economy has been prosperous. Chang'an, the capital, is densely populated with merchants from all over the world. There are many restaurants and restaurants. The dishes are rich and the cooking methods are various. Not only the color, aroma and taste are required, but also the food combination is important to maintain health.

The royal family of the Tang Dynasty paid special attention to medicated diet for health preservation, and the court continued to create unique medicated diet delicacies. For example, "Sheep Liver with Tang Palace Sauce and Vinegar" is a regular health recipe in the palace. This recipe can be seen in the "Food Medicine Heart Mirror" written by Meng Shen, a famous food doctor in the Tang Dynasty. The raw materials of "Tang Gong Sauce and Vinegar Lamb Liver" are 1 pound of sheep liver, soy sauce, vinegar, sugar, rice wine, ginger, scallions, starch, Appropriate amount of vegetable oil and so on.

The specific method is to wash the lamb liver, slice it, wrap it in cornstarch sauce, stir-fry it in hot vegetable oil, add soy sauce, vinegar, sugar, rice wine, minced ginger, minced green onion and other seasonings, stir-fry When tender and cooked, it is ready to eat.

"Sheep Liver with Tanggong Sauce and Vinegar" has the effect of nourishing the liver and improving eyesight. It can be used for diseases such as liver deficiency, blurred vision, and night blindness.