Pat the beef stew meat dry with a paper towel and season evenly with sea salt and black pepper.
Heat the olive oil in a heavy-bottomed pot or Dutch oven over medium-high heat.
Sear the beef in the hot oil until a deep brown crust forms on all sides, then remove the meat and set it aside.
Reduce the heat to medium and add the diced carrots, onion, and celery to the pot, sautéing for 5 minutes until softened.
Stir in the minced garlic and cook for 1 minute until fragrant.
Pour in the red wine to deglaze the pan, using a wooden spoon to scrape up any browned bits from the bottom.
Return the beef to the pot and add the beef bone broth and the fresh rosemary sprig.
Bring the liquid to a gentle simmer, then cover the pot with a tight-fitting lid and reduce heat to low.
Braised the beef for 90 minutes, or until the meat is fork-tender and the sauce has thickened.