Practice: Wash beef and various mushrooms, and marinate with sugar and wine salt, raw flour, clear oil and sliced onion and ginger for 10 to 15 minutes; Cut off the roots of washed mushrooms and carrots; Put some water in the pot to boil, add mushrooms and cook soup; Pour in the marinated beef and carrots, cover the pot and continue cooking; After the soup is boiled, turn down the heat and continue to cook 10 to 15 minutes, and then take out the pot (don't cook for too long, otherwise the beef will not be tender).