Cut the beef fillet into cubes, scald the tomatoes, peel them, remove the seeds and then dice. Cut the mushrooms into sheaths.
Heat the olive oil in a pan and fry the fillet over medium heat for 4 minutes. Salt and pepper, remove and keep warm.
Peel the shallots and cut into fine rings. Then put this in the remaining roasting fat and let it turn glassy. Then add the sliced mushrooms and let them steam for a good 5 minutes. Add the tomato cubes and sauté them. Then add the wine and the broth and let everything boil down. Stir in the sour cream and let the sauce cook until it starts to thicken. Season everything again with the spices and add the herbs. Bring to the boil briefly. Stir in the sliced beef fillet and serve.