Beef Stroganov

Peel and cut the onion into very thin slices and clean and cut the mushroom caps into thin slices. Cut the beef into little finger size pieces  Picture  .

Put a pan over a high heat, season the beef with salt and black pepper and cook very quickly on both sides for a couple of minutes. Take out of the pan and keep to one side. Put a little more butter in the pan, add the onions and cook over a medium heat, turning from time to time, for about five minutes.

Meanwhile put the water on for the pasta and add the tagliatelli when boiling. Cook for about five minutes or whatever the carton says.

Add the sliced mushrooms to the onions and cook for a further few minutes until mushrooms are ready  Picture  . Take off the heat, and season well with salt and lots of black pepper. Put back over the heat, stir in the beef pieces, and add the sour cream. Stir well, and when hot re-season if required  Picture  .

Drain the pasta, put on serving dishes and spoon the Stroganov on top  Picture  .