FILET MIGNON A LA DIJONNAISE

600 g (1,32 lbs) veal tenderloin, 40 g (0,088 lbs) butter, 80 g (0,192 lbs) heavy cream, 5 cl of white wine, 5 cl of oil, 1 tbsp of mustard seeds, salt, pepper. Cut the filet mignon into small slices (count 3 or 4 per person); salt them and pepper then sauté them in 20 g (0,044 lbs) of butter and 2 cl of oil, giving them a nice color on each side. Keep warm. De-grease the pan, make it "sweat", i.e. cook without coloring, the finely chopped shallot, de-glaze with the white wine add the seeds mustard and reduce over high heat. Then add the crème fraîche and season with salt and pepper. Serve the slices of filet mignon topped with sauce with hash browns.