Braised lamb and yoghurt

Ingredients

• 1 brown onion (150g), chopped coarsely
• 1 tablespoon grated fresh ginger
• 2 cloves garlic, crushed
• 1 teaspoon coriander seeds
• 1 teaspoon cumin seeds
• 1/2 teaspoon cardamom seeds
• 2 tablespoons lime juice
• 1 1/2 kilograms boned leg of lamb, chopped coarsely
• 30 grams butter
• 1/4 teaspoon cayenne pepper
• 2 teaspoons ground turmeric
• 1 teaspoon garam masala
• 2/3 cup (190g) plain yoghurt
• 2/3 cup (160ml) cream
• 1 cup (250ml) water
• 400 grams can chickpeas, rinsed, drained
• 2 tomatoes (380g), chopped coarsely
• 1 tablespoon plain flour
• 2 tablespoons water, extra
• 1/4 cup chopped fresh flat-leaf parsley