Cook some potatoes in the microwave (6-7mins) and peel and chop them.
Prepare the tomato curry by cooking some onion in olive oil until its brown. Then add some chopped tomatoes.
Prepare the potatoes by heating some olive oil and frying a tablespoon of mustard seeds. Then add the potatoes and haldi and salt to taste.
Pour in the tomato curry, stir and ready to serve!