Lamb & spinach curry

INGREDIENTS

• small chunk ginger , peeled and chopped
• 2 garlic cloves , chopped
• 2 onions , roughly chopped
• 2 green chillies , sliced
• 1 tbsp oil
• 1 tbsp ground cumin
• 1 tbsp ground coriander
• 1 tsp ground turmeric
• 1 tsp chilli powder
• 600g lamb neck fillet
• 4 tomatoes , chopped
• 1 tbsp tomato purée
• 100g bag spinach , chopped