Michel Roux Jr’s roast duck with spiced pears

Ingredients

• 2 pears
• 500ml red wine
• 1 tbsp caster sugar
• 1 clove
• 1 cinnamon stick, broken up
• 1 tsp green peppercorns, crushed
• 1.4kg oven-ready duckling or duck (see Know-how)
• 1 tbsp oil
• 1 large shallot, roughly chopped
• 1 tbsp butter, cold
• You’ll also need
• Digital thermometer