Beef stroganoff
Beef Stroganoff or beef Stroganov[a] is a Russian dish of sautéed pieces of beef in a sauce of mustard and smetana . From its origins in mid-19th-century Tsarist Russia, it has become popular around the world, with considerable variation from the original recipe. Mushrooms are common in many variants. The dish is named after one of the members of the Stroganov family. A legend attributes its invention to French chefs working for the family, but several researchers point out that the recipe is a refined version of older Russian dishes. In Russian the dish is called Бефстро́ганов from the French Bœuf Stroganoff. Elena Molokhovets [ru]'s classic Russian cookbook A Gift to Young Housewives gives the first known recipe for Govjadina po-strogonovski, s gorchitseju, "Beef à la Stroganov, with mustard", in its 1871 edition. The recipe involves beef cubes (not strips) prepared in a dry marinade of salt and allspice, and then sautéed in butter. The sauce is a simple roux mixed with prepared mustard and broth, and finished with a small amount of sour cream: no onions, no mushrooms and no alcohol.
Source: Wikipedia