Take 4 eggs, 1 onion, 4 small potatoes, 1/4 cup olive oil and plenty of salt & pepper.
Take a frying pan and heat the oil at medium.
Cook potato and onion slices slowly. Stir 2 or 3 times, but otherwise just let them cook on low for almost half an hour.
Carefully spoon the cooked potato and onion into the eggs. Let stand for a while to let beautifully simple flavors meld together.
Heat a little more oil in a smaller pan. Pour the mixture in. Turn the heat down to low. Let the tortilla cook.
Flip your omelette! Use a plate to help.
Let cook for a little longer, then slice out onto a serving board.