Braised Beef with tomatoes

3 lbs beef , bottom round Trimmed of most fat and cut into 1 and 1/4-inch chunks sea salt and fresh ground black pepper 1 tablespoon olive oil 1 sweet onion ,[...]

3 1/2 lbs boneless short ribs (trimmed of excess fat see note and technique below) 1/2 teaspoon kosher salt 1/2 teaspoon ground black pepper 2 tablespoons[...]

3 lbs beef , bottom round Trimmed of most fat and cut into 1 and 1/4-inch chunks sea salt and fresh ground black pepper 1 tablespoon olive oil 1 sweet onion ,[...]

3 1/2 lbs boneless short ribs (trimmed of excess fat see note and technique below) 1/2 teaspoon kosher salt 1/2 teaspoon ground black pepper 2 tablespoons[...]