Lamb Stew with Vegetables

Bahan-bahan (4 porsi)

• 3 lbs lamb shoulder, (well-trimmed and cut into 1½-in (4-cm) pieces)
• 2 teaspoons salt
• 1 teaspoon freshly ground black pepper
• 3 tablespoons vegetable or olive oil
• 2 medium yellow onions (cut into 1½-in (4-cm) chunks)
• 6 cloves garlic, (peeled and smashed)
• 3 tablespoons tomato paste
• ¼ cup all-purpose flour
• 1 cup Guinness
• 3 cups beef broth
• 2 cups water, (plus 2 tablespoons more for cooking onions and garlic)
• 1 bay leaf
• 1 small sprig fresh rosemary
• 2 teaspoons sugar
• 4 large carrots, (peeled and cut into 1-in (2.5-cm) chunks on the diagonal)
• 1 lb small white boiling potatoes ((baby yukons), cut in half)
• 1 cup frozen peas