Potato Salad

There are many kinds of potato salad.  I don't know if it's popular in other countries but in Japan it is a very popular dish.  You can buy it at a supermarket or department store's food section, but if you make your own potato salad, it tastes much better.

This recipe is from my mom:
- Boil some potatoes with a bit sugar and salt.
- Use the boiling potato water to add sliced onions for 2 minutes and then scoop out the onions and drain.
- When potatoes are soft, drain and put them back to a pan.
- Put a small fire to dry the water out from potatoes.  Then mash and add the onions.
- Add Japanese mustard (Karashi) and Mayonnaise.
- Place cucumber, ham and boiled eggs around the potatoes.