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The Spanish tortilla, or tortilla de patatas, is a classic and hearty dish from Spain, essentially a thick, savory omelette. Its core ingredients are simple: eggs, potatoes, and onions, slowly cooked in olive oil until tender before being set together in a pan. It's a staple of Spanish tapas culture, enjoyed warm or at room temperature.
This dish is notably high in healthy fats from olive oil and protein from eggs, with carbohydrates coming from the potatoes. A typical serving provides a good source of energy, vitamin B12, and potassium, with a rough calorie estimate of around 250-350 per generous slice, depending on the oil used.
Culturally, the Spanish tortilla is a beloved national dish, often served as a tapa, a light meal, or even a filling for a sandwich (bocadillo). Its unique, dense texture is achieved by 'poaching' the potatoes in oil rather than frying them crisp, resulting in a tender, cohesive interior.