Mushroom soup for Cream Vegetarian

Wash and slice the red onion as thin as possible. Saute onion using margarine for 5 minutes. Sprinkle with flour and cook for 1 minute, stir. Add flour if you want a thick soup. Enter the beef, boiled and stir for 10 minutes. Add the cream and lower the heat to heat the coldest. Mix the eggs with the sour cream. Heat but do not boil, then enter the pepper and salt to taste. Ready to serve.