The dish with no off-season
Tortilla de patatas shows up at breakfast, lunch, and midnight. It's on the bar top as a tapa, on the restaurant menu as a racion, and in the supermarket fridge as a last resort. In Córdoba it's as fundamental as salmorejo — one of those dishes where every bar has an opinion about how to do it right, and regulars form loyalty based on texture alone.
Three ingredients: potatoes, eggs, and olive oil. The onion question is genuinely divisive. Ask for con cebolla or sin cebolla and the bartender will have a view.