Japanese Potato Salad (ポテトサラダ 作り方 レシピ)

200g Potato, cut into bite-size pieces (7.1 oz)
50g Carrot, 4mm thick quarter moons (1.8 oz)
¼ tsp Salt
2 pinches of Sugar
½ tsp Vinegar
White Pepper
½ Cucumber (70g/2.5 oz)
30g Ham, 5mm thick (1.1 oz)
50g Onion (1.8 oz)
1 Boiled Egg
2 tbsp Mayonnaise
White Pepper
Salt