4medium potatoesa medium waxy potato like Yukon Gold or Natasha
1/2tsp. Kosher salt
1/4tsp. black pepper
1/4tsp. instant dashi powder
1/2small carrotfinely shredded
2ham or any sliced deli meatoptional
1/4C. cooked corn kernelsoptional
Wash and peel the potatoes. Quarter the potatoes and place them into a medium saucepan, cover with water. Bring to a boil, reduce the heat and simmer until fork tender.
Thinly slice the cucumber. Place the slices in a colander and sprinkle a couple pinches of salt. Allow to rest for 5-10 minutes. Place the salted cucumber slices into a paper towel. Squeeze out any excess water. Set aside.
Drain the potatoes and place them into a large bowl. Use a potato masher or a fork and gently crush the potatoes a few times, leaving some larger chunks.
Add salt, sugar, black pepper, and dashi powder. Stir to combine.
Add the mayonnaise, drained cucumber slices, carrots, corn, and ham. Gently fold to combine.
Serve warm or allow to cool before refrigerating and serve cold.