Moroccan Lamb Recipe - Great British Chefs

Ingredients

• 1 leg of lamb
• 600g of onion, peeled and quartered
• 8 garlic cloves, peeled
• 3 celery sticks, chopped
• 1 leek, chopped
• 6 tbsp of olive oil
• 3 aubergines
• 1/2 tsp ground cinnamon
• 2 tsp harissa
• 3 tbsp of tomato purée
• 1.2kg tinned chopped tomatoes
• 500ml of water
• 1 bunch of coriander, chopped
• 250ml of natural yoghurt
• 250g of couscous
• boiling water, to cover
• 25g of butter
• 2 lemons, zest only
• 1 pinch of salt