Cut the potatoes, carrots, onions, and ham into bite-sized pieces.
Heat cooking oil in a pot and stir-fry the ham.
Add the potatoes, carrots, and onions, and stir-fry together.
Pour in 300ml of water and bring to a boil.
When the ingredients are cooked, reduce to low heat and add curry powder.
Stir well and simmer for 5 minutes.
Serve the finished curry over rice.