Lamb Burger with Pomegranate Seeds from New York Christmas by Lisa Nieschlag and Lars Wentrup

Ingredients

• Salt, pepper
• 3 tbsp olive oil
• 2 onions
• A little rocket
• 1 star anise
• 1 leg of lamb, with bones (about 1.2 kg/2 lb 12 oz)
• 1 cinnamon stick
• 1 bay leaf
• 150 g (5½ oz) tomatoes, puréed
• 400 g (14 oz) tomatoes, diced (from a can)
• 100 ml (3½ fl oz) red wine
• 125 ml (4 fl oz/½ cup) beef stock
• 4 burger buns
• ½ tsp allspice powder
• 40 g (1½ oz) fresh pomegranate seeds
• 4 tsp butter