Peel and chop the potatoes and boil for 5 minutes.
Toss the cauliflower and potatoes with all the spices and roast for 30 mins.
While that's happening, cook the garlic, tomatoes, chilli sauce and lime juice and cover and cook for about 10 minutes, until tomatoes are really softened.
Mix it all together with the coriander and serve with rice and naan bread.
