Nikujaga

Ingredients 400g pork belly or pork loin, cut into 2cm cubes 1 tablespoon of vegetable oil 4 medium potatoes, cut into 1cm cubes 2 medium onions, diced 2 carrots, diced 500ml water 2 tablespoons of Dashi powder (optional) 2 tablespoons of Japanese soy sauce 1 teaspoon of grated ginger