Spanish tortillas à la Fenella

8 big potatoes
1 onion, diced
4 eggs
salt to taste

Boil the potatoes. When they're done, peel them and mash them slightly so that they are chunky. Set aside.

Fry the diced onion.

Beat the eggs. Add fried onions to the egg, then the mashed potato. Add salt to taste.

Pour mixture into pan and cook on both sides on medium temperature.

Optional -You may some add serano schinken to the mixture.