Bahu Domba Bawang Putih Rosemary Panggang Lambat

Bahan-bahan (4 porsi)

• 1.8 kg / 3.5 lb lamb shoulder (bone in) ((Note 1))
• 2 tbsp olive oil
• 2 tsp salt
• 1 tsp black pepper
• 1 onion, quartered ((no need to peel))
• 1 head garlic (, cut in half horizontally)
• 3 g arlic cloves (, cut into slivers)
• 8 sprigs rosemary
• 1 cup water
• 2 tbsp flour
• 2 cups beef broth ((or 1 cup red wine + 1 cup water))
• Salt and pepper