Tortilla Española (Spanish Potato Omelet)
Tortilla Española (its relation to Mexican tortillas comes solely from it round shape) is among the most popular dishes in Spain. Although its ingredients couldn't be more basic--potatoes, eggs, onions, and oil--they're combined and cooked in a way that makes this dish irresistible and versatile. The potatoes are normally fried, but we've roasted them with excellent results. Unlike American omelets, this one's best made several hours ahead then served at room temperature.