Beef:

• 1.5 pounds (680 grams) beef chuck or stew meat, cut into 1-inch cubes
• 2 tablespoons olive oil
• Salt and freshly ground black pepper
• 2 tablespoons all-purpose flour (optional, for browning)

Vegetables:

• 1 large onion, finely chopped
• 3 carrots, peeled and diced
• 3 celery stalks, diced
• 8 ounces (225 grams) mushrooms, sliced (optional)
• 3 cloves garlic, minced

Seasonings:

• 1 teaspoon dried thyme
• 1 teaspoon dried oregano

Broth and Others:

• 8 cups (2 liters) beef broth or stock (preferably homemade or low-sodium)
• 1 cup pearl barley, rinsed
• 2 tablespoons tomato paste
• 1 tablespoon Worcestershire sauce
• 1 tablespoon soy sauce (optional for depth of flavor)
• 2 bay leaves
• 1 cup diced potatoes (optional)
• 1/4 cup fresh parsley, chopped (for garnish)