Welsh Lamb jalfrezi

Ingredients

• 650g PGI Welsh Lamb cubes (shoulder or boneless neck)
• 1 tsp ground cumin
• 1 tsp ground coriander
• 1 tsp turmeric
• 1 tsp garam masala
• 1 tbsp oil
• 1 tbsp ghee
• 1 large onion, sliced
• 3 green chillies, seeded
• 2 tsp ginger, grated
• 4 garlic cloves, crushed
• 1 tbsp garam masala
• 1 tbsp turmeric
• 1 tbsp ground cumin
• 1 tbsp ground coriander
• ½ tsp salt
• 1 tsp sugar
• 1 x 400g tin of chopped tomatoes
• 1 tbsp tomato purée
• 300ml lamb or vegetable stock
• 1 tbsp cornflour to thicken (if required)
• 1 red pepper, sliced
• 1 green pepper, sliced
• 1 onion, sliced
• Handful of cherry tomatoes, halved, or 2 tomatoes, quartered
• Natural yogurt
• Fresh coriander, chopped