Start by seasoning the beef knuckle generously with salt.
In a large stockpot, heat a tablespoon of oil over medium-high heat. Sear the beef knuckle on all sides until browned.
Add the chopped onion, sliced carrots, minced garlic, bay leaves, and peppercorns to the pot.
Pour enough water into the pot to cover the beef knuckle. Optionally, add fresh herbs for additional flavor.
Bring the mixture to a boil, and then lower the heat to a simmer. Cover and let it simmer for 3-4 hours or until the beef is fork-tender.
Once cooked, carefully remove the beef knuckle from the pot and let it rest before slicing.
Serve the slices on a platter, surrounded by the flavorful broth and vegetables.