Steps
1. Peel and dice the potato into small cubes.
2. Parboil the potato cubes in boiling water for 5 minutes, then drain and pat dry.
3. Heat vegetable oil in a non-stick pan over medium heat.
4. Add the potato cubes and cook until golden and crispy on all sides, about 10 minutes.
5. In a small bowl, mix soy sauce and sugar until sugar dissolves.
6. Pour the soy sauce mixture over the crispy potatoes, stirring to coat evenly.
7. Cook for another 2 minutes until the sauce thickens slightly.
8. Season with a pinch of salt and black pepper.
9. Garnish with chopped green onion if desired and serve hot.