To make Aloo Vindaloo, first heat a saucepan. Add chopped potatoes, water and salt to it. Cook until the potatoes are half cooked or soft. Take out the water from the potato and keep them separately. Now in a mixer grinder pour the ingredients given for the vindaloo spices and grind it. Now heat the oil in a pan. Add the mustard seeds and curry leaves and let it cook for 10 seconds. After 10 seconds, add Vindaloo paste and let it cook for 3 minutes. After 3 minutes, add 1/2 cup water, potato, salt and mix it. Cook for 10 to 12 minutes. Then add some sugar, mix and serve hot. Serve Aloo Vindaloo with Sol Kadhi and Rice for dinner.