In order to make fresh rehmannia glutinosa taste delicious, the method of making juice is: heat the oil, add minced garlic and stir-fry for fragrance. Pour the prepared juice (juice: white sugar, soy sauce, vinegar, starch and monosodium glutamate mixed with water) into the pot until it thickens. Finally, pour in the eggplant, potatoes and sweet peppers that have been fried before, stir them quickly and evenly, and wrap them in juice.