Dice the onion, potato, and carrot.
Cut the beef or pork into bite-sized pieces.
Add oil to a pan and stir-fry the meat.
When the meat is cooked, add the vegetables and stir-fry together.
When the ingredients are halfway cooked, pour in water and bring to a boil.
Once the vegetables are cooked, add curry powder and stir well to dissolve.
Simmer over low heat.
Serve the curry over rice.