....well, I use cubes of meat, rather than strips. Also, I remove the outside skin of a very large onion, but I don't slice it. After saute`ing the meat (seasoned with paprika, sea salt, and freshly-cracked pepper) I add the onion, lowering the heat, adding two bay leaves and a beef buillion cube melted in 6 oz. of hot water, and covering it, simmering for about 45 minutes. That's when I add the sliced mushrooms. Cook for another 10 minutes and stir in 2 cups of sour cream. After thoroughly mixed, I dissolve a heaping tablespoon of cornstarch in an ounce of water and pour that slurry into the meat mixture to slightly thicken the sauce. Then I serve it over buttered noodles. (GF, of course!)