Mix all marinade products and put it in the tenderloin. All put in an envelope for baking, tie and leave so overnight or several hours. Bake for about an hour - hour and a half of 200 ° C as it is in the bag in a baking dish. Potato balls: Boil the potatoes and mash them for paste. Add margarine (butter), dill, pressed garlic, nutmeg and mix well. Shape small balls and roll them in grated cheese. Sprinkle with dill. The finished fillets cut into slices and pour the onion mixture and liquid that has separated the cooking. If you want to smooth the sauce can be pureed and then pour the meat. From countries put cheese-potato balls.