- Peel the potatos, cut them into thin layers. In a large skillet, fry them until slightly brown (but not as brown as French Fries). Remove from pan.
- In the same skillet cook the Onion, chopped, until soft. Add the potatos and the eggs.
- Cook everything on low heat for 15–25 minutes (the eggs will no longer be liquid). Turn the frittata upside down over a dish to cook the other side (I use a dish, other people use other type of flat object). Be careful, if the frittata wasn't ready and the eggs weren't cooked enough, you will get a mess.
- Once on the other side, cook for 5 more minutes. Eat. Some people add sausages to the mixture.