01 -
Combine white vinegar, water, brown sugar, cloves, peppercorns, bay leaves, and chopped onion in a saucepan. Bring to a boil, stirring to dissolve the sugar, then remove from heat and allow to cool completely.
02 -
Place the beef roast in a large bowl or resealable bag. Pour the cooled marinade over the meat, ensuring it is fully submerged. Cover and refrigerate for 3–4 days, turning the meat daily to marinate evenly.
03 -
Remove the beef from marinade and pat dry with paper towels. Heat vegetable oil in a heavy Dutch oven over medium-high heat. Sear the beef on all sides until well browned.
04 -
Add carrots, celery, and the reserved marinade (including onions and spices) to the pot with the seared beef. Pour in beef broth until the meat is nearly covered. Cover and braise in a preheated oven at 165°C for 2.5 to 3 hours, or until fork-tender.
05 -
Remove the beef and cover loosely with foil to rest. Strain the braising liquid into a clean saucepan, discarding vegetables and spices. Bring the sauce to a simmer and reduce until slightly thickened. For a thicker sauce, stir together cornstarch and cold water, then whisk into the simmering sauce until desired consistency is reached.
06 -
Slice the rested beef thinly and arrange on a serving platter. Ladle the tangy sauce over the meat. Serve with traditional sides such as spaetzle, potato dumplings, or braised red cabbage.