Dice the onion and potato, slice the carrot thinly.
Chop the tomato finely and set aside.
Heat cooking oil in a pot and sauté the onion, potato, and carrot.
When the vegetables are halfway cooked, add the tomato and mix.
Cover with a lid and simmer over medium-low heat for 10 minutes without adding water.
Once the ingredients are tender, add curry powder and mix well.
Simmer over low heat for another 5 minutes to finish.