Step1:Soybeans need to be soaked for more than 4 hours in advance.
Step2:After the pig's hands are washed, put the cleaned pig's hands into cold water. Add wine and ginger to boil the bleeding water, and take out the pig's hands.
Step3:Put the pig's hand, soybean, yam slice and onion in the new water. Stew for 2 hours with a small fire. Season with salt before eating.
Cooking tips:1. Soybeans must be boiled. Because raw soybeans or mixed soybeans contain antitrypsin and thrombin, which are extremely harmful to human body. Too much gas will be produced in the digestion process, resulting in bloating and indigestion. 2. Don't add salt too early. Putting salt too early is not easy for meat to crumble. It tastes very firewood and tastes bad. Salt will also make the water in the meat run out quickly. It will speed up the coagulation of meat protein. It will seriously affect the delicious taste of the soup. There are skills in making delicious dishes.