Dried beans salad

Description
In Romanian: Salata de fasole boabe.

Ingredients

 * 1/2 lb/250 dried beans,
 * 2 tablespoons oil,
 * 2-3 tablespoons vinegar,
 * 1 big onion,
 * salt,
 * pepper

Directions

 * 1) Boil and cool the beans.
 * 2) Drain and then mix with chopped onion.
 * 3) Add oil, salt, vinegar and some pepper.