low-sodium beef broth
medium onion, sliced
cloves garlic, smashed
beef brisket, trimmed
kosher salt and black pepper
red wine vinegar
mixed greens (about 6 cups)
large baguette—cut into 4 pieces, split horizontally, and lightly toasted
- In a 4- to 6-quart slow cooker, combine the broth, onion, garlic, Worcestershire, and flour. Season the brisket with ½ teaspoon salt and ¼ teaspoon pepper and place in the slow cooker. Cover and cook until very tender, on low for 7 to 8 hours or on high for 4 to 5 hours (this will shorten total recipe time).
- Ten minutes before serving, transfer the brisket to a cutting board and thinly slice against the grain. Strain the cooking liquid into a small saucepan and reserve the onions. Boil the cooking liquid until reduced to 1½ cups, 5 to 7 minutes.
- In a large bowl, whisk together the oil, vinegar, and ¼ teaspoon each salt and pepper. Add the greens and toss to combine.
- Dividing evenly, form sandwiches with the baguette, brisket, and reserved onions. Serve with the cooking liquid, for dipping, and the salad.