Ingredients
1 medium yellow onion, diced small
3 garlic cloves, minced
6 tablespoons tomato paste
3 tablespoons chopped fresh oregano leaves (or 3 teaspoons dried)
1 beef chuck roast (4 pounds), halved
Coarse salt and ground pepper
1 to 2 tablespoons red-wine vinegar
Preparation
In a 5-to-6-quart slow cooker, combine onion, garlic, tomato paste, and oregano. Season roast with salt and pepper and place on top of onion mixture.
Add 2 cups water, cover, and cook on high until meat is tender and can easily be pulled apart with a fork, 4 1/2 hours (or 9 hours on low). Let cool 10 minutes, then shred meat in slow cooker with 2 forks and stir in vinegar to taste.
