Ingredients

• 1 half of a bone-in, leg of lamb
  
• Salt and pepper
  
• 5-6 tablespoons olive oil
  
• 1 large onion, diced
  
• 10, or, to taste, cloves of garlic, smashed and diced
  
• 2 sprigs fresh rosemary
  
• ¹/₄ cup red wine
  
• ¹/₃ cup black kalamari or gaeta olives
  
• 1 orange, quartered
  
• ¹/₁ cup tomato passata
  
• 2 cups chicken stock
  
• orange zest