Mix all the powders well. Reserve 2 tbsp of the powder mix and mix the remaining into the cauliflower. Steam the cauliflower. Mix the remaining powders separately with a little water and cook this mixture in a pan, along with the onion, tomato and coconut, until the gravy bubbles up and becomes fragrant. Pour over the vegetables, garnish with coriander leaves (optional) and serve.
Try the same recipe with any vegetable you may like.