1. Heat a little oil in a medium saucepan. Cook onion covered over a medium low heat until soft, about 8 minutes. 2. Add cauliflower, pepper, cumin, turmeric and mustard seeds, if using. Stir to combine. 3. Add tomatoes and chickpeas and the juices from both cans. Use a spoon to break up the tomatoes a little. 4. Cover and simmer for 5 minutes on a medium heat. 5. Stir. And continue to cook for another 5 minutes or until the cauliflower is no longer crunchy. If you want a thicker curry leave the lid off, if you’re happy with the consistency, leave the lid on. 6. When the cauli is tender, taste and season with salt and more pepper if you need more heat. Serve with mint leaves, if using and a big dollop of yoghurt.