This classic Spanish tortilla or tortilla de patatas should not be confused with tortillas from Mexico. Whereas Spanish tortillas contain mainly eggs and potatoes, Mexican consist of cornflour. You will find Spanish tortilla everywhere, each café or pub offers some, I believe it is something like the secret national dish. There are many variations out there, some are made with onions, others prefer without and you can fill them and include add-ons. I am going to introduce the classic version here including onions. This means five ingredients: potatoes, eggs, onions, olive oil, and salt. If you don’t count the salt, it is just four ingredients.
