Marinate. Combine the marinade in a zip top bag, add the beef, and refrigerate for 24 hours to 3 days. Temper and dry. Set the beef out for 30 minutes, heat the oven to 325 degrees F, and pat the beef dry, keeping the marinade.
Brown. Sear in 1 tablespoon of hot olive oil, 3 to 4 minutes per side, until deeply browned. Roast covered. Put the beef in a roasting pan with the marinade and broth, cover with foil, and roast for 1 hour.
Add vegetables. Add the potatoes and carrots, cover, and roast 1 more hour until the beef is fork tender.
Rest. Transfer the beef to a board, cover loosely, and rest for 15 minutes.
Thicken the gravy. Whisk the flour with cold water, stir into 2 cups of strained pan juices, and simmer for 5 minutes.
Carve. Slice against the grain and serve with the vegetables and gravy.