Slow Cooker Short Ribs

Bahan-bahan (6 porsi)

• 6 to 8 bone-in short ribs (about 3.5 to 4 lbs)
• ¼ teaspoon salt
• ½ teaspoon black pepper
• 2 tablespoons vegetable oil
• 1 large onion (diced)
• 2 cups beef stock
• 1 cup dry red wine
• 3 medium carrots (peeled and cut 2-inches)
• 2 ribs celery (cut ½-inch)
• 3 cloves garlic (minced)
• 2 tablespoons soy sauce
• 1 tablespoon tomato paste
• 1 teaspoon dried rosemary
• ½ teaspoon dried thyme leaves
• 2 bay leaves
• 2 ½ tablespoons cornstarch