Dice the onion, potato, and carrot.
Cut the beef into bite-sized pieces.
Heat cooking oil in a pan and sauté the onions.
Add the beef and cook until it turns brown.
Add the potatoes and carrots and stir-fry together.
Pour in 300ml of water and bring to a boil.
Once the ingredients are cooked, add curry powder.
Simmer over low heat, stirring until the curry thickens.
Serve with rice in a bowl.