Ducks live in water all the year round. They are cool. They have the functions of nourishing yin and stomach, benefiting water and reducing swelling. The old duck is rich in nutrition. According to the research, in every 100 grams of duck meat, it is rich in 165 grams of protein, 7.5 grams of fat, calcium, phosphorus, iron, various vitamins, carbohydrates and other nutrients. Yam is also known as Huaishan. It is rich in mucin, amylase, saponin, free amino acid polyphenol oxidase and other substances. It is a good food for rehabilitation after illness. Yam contains almost no fat. Its mucin can prevent fat deposition in cardiovascular system and prevent arteriosclerosis. Edible yam can also increase the proliferation of T-lymphocytes, enhance the immune function, and delay cell aging. This also proves that it is scientific to say that taking yam often can prolong life. The combination of mucopolysaccharide and mineral substance in yam can form bone and make cartilage elastic. This product is rich in vitamins and minerals. Its calories are relatively low, so it has very good
Step1:Wash the materials except duck and yam. Put them into the soup pot. Add some water. Start the old fire soup key.
Step2:Wash the duck pieces and boil them in cold water. Remove the floating matter. Rinse with warm water. Add ginger and stir fry to dry. Put in the soup pot.
Step3:Chinese yam is peeled and washed. It is cut into strips. The yam I bought is bigger. It's cut into four pieces. Put the vinegar into the water and pour it into the soup pot.
Step4:Boil for two hours. Add salt to the pot.
Cooking tips:Remember to wear gloves when peeling yams. Wash your hands after handling. Or your hands will itch. There are skills in making delicious dishes.