01 -
Pound beef slices gently between sheets of plastic wrap until approximately 6 mm thick. Season both sides lightly with salt and black pepper. Spread a thin, even layer of mustard over one side of each slice.
02 -
Heat a small amount of oil in a pan over medium heat. Sauté chopped onion and mushrooms until softened and fragrant, then allow to cool.
03 -
Arrange a slice of bacon, a portion of sautéed onions and mushrooms, and one pickle spear on each mustard-coated beef slice. Roll each slice tightly, tucking in the sides. Secure rolls with toothpicks or tie with kitchen twine.
04 -
Lightly coat each beef roll in flour. In a large skillet, heat oil or clarified butter over medium-high heat. Brown the beef rolls evenly on all sides.
05 -
Transfer browned rolls to a heavy-bottomed pot or Dutch oven. Deglaze skillet with red wine and beef broth, scraping up any browned bits. Stir in tomato paste, bay leaf, marjoram, salt, and black pepper.
06 -
Pour the sauce over the beef rolls in the pot. Cover and simmer gently over low heat for 90 to 120 minutes, until beef is fork-tender.
07 -
Remove toothpicks or twine before serving. Serve hot with potato dumplings, mashed potatoes, buckwheat groats, or braised red cabbage. Garnish as desired.