Cut the soft tofu into bite-sized pieces.
Dice the onion, carrot, potato, and tomato.
Add cooking oil to a pan and stir-fry the onion, carrot, and potato.
Add the tomato and stir-fry together, then pour in 200ml of water.
When the vegetables are cooked, add curry powder and mix well.
Add the soft tofu and simmer over low heat for 3 minutes.
Season with salt and pepper to taste, then serve in a bowl.