Saute beef, garlic and onion. Place the beef between 2 sheets of clingfilm. Allow the sauce to cool completely, then store in a freezer safe container for 2-3 months. In a skillet, heat oil over medium-high. Pick and finely chop the parsley. Add mushroom and onions and sauté until soft. Peel and finely chop the onion and garlic, then finely grate the lemon zest. Stir in flour and water. Beef stroganoff is a traditional Russian dish made with tender cuts of beef, onions, mustard and parsley. When onion is tender, reduce heat to low; stir in flour, salt and paprika. Directions. Reheat on the stove top and stir in sour cream once reheated. To freeze stroganoff, make the sauce up until the last step of adding the sour cream. Then, you finish the sauce … Melt butter in frying pan. Clean and tear the mushrooms. This easy beef stroganoff recipe will become a classic warming winter dish in every household. DIRECTIONS. Stroganoff sauce is quite simply made of an easy butter/flour roux. This is flavored with softened mushrooms, onions, garlic as well as seasonings. Mix in remaining ingredients and simmer for about 5 minutes, until slightly thickened, stirring often. Bash with a rolling pin until ½ cm thick, then cut into finger-width slices. Mix …