Peel and boil the potatoes, then mash them.
Slice cucumber and carrot thinly and marinate them with salt.
Finely chop onion and soak in cold water to remove the pungent taste.
Chop the boiled eggs finely.
Place the mashed potatoes, prepared vegetables, and eggs in a bowl and mix well.
Add mayonnaise, salt, and pepper, and mix everything evenly.
Transfer to a plate and serve.