Rajma (kidney bean curry)

Name: Rajma (kidney bean curry)
Prep time: 30 min
Cook time: 45 min
Total time: 45 min
Yield: 4 portions
Ingredients: 30 g cumin seeds; 2 - 3 dried bay leaves; 30 g coriander seeds; 1 tsp whole cloves; 12 black cardamom pods; ½ cinnamon quill; ¼ tsp black peppercorns; 2 tsp Kashmiri chilli powder; 1 tbsp ground ginger; 2 tsp ground turmeric; 5 brown onions; 2 fresh long green chillies; 1 tbsp garlic paste; 1 tbsp ginger paste; 40 g ghee; 40 g canola oil; 30 fresh curry leaves; 800 g canned whole tomatoes; 1 tbsp brown sugar; 1 tbsp Vegetable stock paste; 1 tsp sea salt; 30 g canola oil; 3 brown onions; 1 tsp ginger paste; 1 ½ tsp salt; ½ tsp ground black pepper; 1 tsp garam masala; 125 g Greek-style natural yoghurt; 800 g canned kidney beans