Step 1

Arrange a rack in the middle of the oven and heat the oven to 325°F.

Step 2

Heat 3 tablespoons olive oil in a large Dutch oven over medium-high heat until shimmering. Add 1 (3 to 4-pound) chuck roast and sear until deep golden-brown on all sides, including the ends, about 5 minutes per side.

Step 3

Sprinkle the chuck roast with 1 onion soup packet, then pour 2 cups beef broth over the roast. Cut 4 tablespoons unsalted butter into 6 pieces and place on top of the roast. Bring to a simmer.

Step 4

Cover and braise in the oven for 1 hour and 45 minutes. At this point, the meat should be tender but not falling apart yet. Meanwhile, cut 1 pound Yukon gold potatoes into 2-inch chunks and peel and cut 1 pound carrots crosswise into 2-inch pieces.

Step 5

Uncover and nestle the carrots and potatoes into the braising liquid around the roast. Cover and braise in the oven until the roast pulls apart easily and the vegetables are tender but not mushy, 1 1/2 to 2 hours more.

Step 6

Using a slotted spoon, transfer the vegetables to a serving platter. Slice the beef into bite-sized pieces, then sprinkle the beef with 1 teaspoon red wine vinegar. Reserve 2 cups each of the shredded beef and the cooked vegetables for the soup before serving the remainder.