Tortilla española, also called tortilla de patatas, is a Spanish potato-and-egg omelet cooked gently in olive oil and served in wedges or small tapas portions. It is a useful introduction to traditional Spanish food names because its ingredients are simple, its texture is satisfying, and cooks can serve it warm or at room temperature; onion is a familiar but debated addition, so this version includes it.
Ingredients
- 2 lb (900 g) waxy or all-purpose potatoes, such as Yukon Gold, peeled
- 1 medium yellow onion, about 1 cup thinly sliced (150 g)
- 1½ cups (360 ml) extra-virgin olive oil, plus 1 tablespoon (15 ml) for the skillet as needed
- 8 large eggs, about 1¾ cups (400 g) without shells
- 1 teaspoon fine salt (5 g), divided, plus more to taste
- ⅛ teaspoon freshly ground black pepper (about 0.3 g), optional
Instructions
- Prepare the vegetables. Cut the potatoes into thin, even slices about ⅛ inch (3 mm) thick; halve larger slices so they are easy to turn later. Peel and thinly slice the onion. Keeping the slices similar in thickness helps them soften at the same pace. Pat the potatoes dry if they are wet, since water can make hot oil spit.
- Gently cook the potatoes and onion. Choose a deep, heavy 10-inch (25 cm) skillet or saucepan. Add the 1½ cups (360 ml) olive oil and heat over medium-low for about 2 minutes, until it shimmers but does not smoke. Carefully add the potatoes and onion; the oil should largely cover them. Lower the heat if the vegetables sizzle sharply. Cook gently for about 20 minutes, turning carefully every few minutes, until the potato slices are tender and can be pierced easily but have not turned crisp or deeply browned. The aim is soft, lightly cooked potatoes, not chips.
- Drain and season. Set a heatproof bowl beneath a large sieve or colander. Carefully pour in the potatoes and onion, saving the oil in the bowl. Let them drain for about 2 minutes, then season with about ¾ teaspoon of the salt. The oil is hot; use oven mitts and pour slowly. Measure out 1 tablespoon (15 ml) of the drained oil for cooking the tortilla. The remaining oil can be cooled and refrigerated for another use; do not leave it out with food scraps.
- Combine with the eggs. Crack the eggs into a large bowl and beat just until the yolks and whites are combined. Stir in the remaining ¼ teaspoon salt and the optional pepper. Add the drained potatoes and onion, folding gently so the slices are coated without being mashed. Leave the mixture for 5 minutes. This brief pause lets the potatoes absorb some egg, helping the finished tortilla hold together.
- Set the first side. Wipe out the skillet if needed and return it to low heat. Add the measured tablespoon of reserved oil, then pour in the egg-and-potato mixture and spread it into an even layer. Cook for about 6 minutes, running a thin spatula around the edge once or twice. The edge should look set while the center remains soft enough to move slightly when the pan is nudged. Keep the heat low; a browned underside can form before the center is cooked if the pan is too hot.
- Turn and cook through. Place a large flat plate over the skillet. Wearing oven mitts, hold the plate firmly in place and invert the pan in one smooth motion. Slide the tortilla, cooked side up, back into the skillet. Cook the second side for about 6 minutes, adjusting the heat as needed. Check the center with a food thermometer: egg dishes should reach 160°F (71°C), the USDA FSIS safe minimum temperature. If it has not reached that temperature, continue cooking in 1-minute increments and check again. The center will be fully set rather than runny.
- Rest and serve. Slide the tortilla onto a clean plate and let it stand for 10 minutes before cutting. This rest helps it firm enough for neat wedges and makes it easier to serve. Taste a small piece and add a little more salt if needed. Serve warm, at room temperature, or chilled.
Tips
- Choose a waxy potato for tidy slices. Yukon Gold, red potatoes, or another waxy variety hold their shape well. Russets also work, but they are starchier and more likely to break as you fold them with the eggs. Whichever type you choose, slice it evenly and cook until tender rather than crisp.
- Keep the oil gentle. The potatoes are meant to soften in olive oil, not brown quickly. If the oil smokes, take the pan off the heat briefly and lower the burner. A deep skillet reduces splatter, and a slotted spoon can be used to transfer the vegetables to the sieve instead of pouring the pan.
- Use a plate that is wider than the pan. A secure, flat plate makes the flip less awkward. Hold it firmly against the skillet, use mitts, and turn away from your face. If flipping feels unsafe, cook the tortilla in an oven-safe skillet under a broiler only if you can monitor it closely; the traditional stovetop turn gives more control and avoids scorching the top.
- Adjust the onion to your preference. Onion is common in many versions, but some cooks prefer tortilla without it. Leaving it out gives a cleaner potato-and-egg flavor; it does not require another ingredient. If you include it, slice it thinly so it softens along with the potatoes.
Serving Suggestions
For a tapas-style spread, cut the tortilla into small squares or narrow wedges and secure each portion with a cocktail pick if serving at a gathering. For a light meal, serve larger wedges with a simple green salad dressed with olive oil and vinegar, or with sliced tomatoes and crusty bread. A bowl of olives or a plate of roasted peppers also fits naturally beside it without competing with the mild potato-and-egg flavor.
In Spain, tortilla española is served in homes, bars, and cafés, and it may be presented as a tapa, a snack in bread, or part of a larger meal. You may see it called tortilla de patatas on a menu; both names refer to this potato omelet, not a Mexican corn or flour tortilla. Let a freshly cooked tortilla rest before slicing, and serve it warm or at room temperature rather than piping hot so the pieces keep their shape.
Variations
Without onion: Omit the onion and keep the rest of the method the same. This widely made version lets the potato flavor stand out. The precise balance of potato, egg, and onion differs between households and regions, so neither approach needs to be treated as the only correct one.
With green pepper: Add ½ cup thinly sliced green bell pepper (about 75 g) with the onion and potatoes. It will bring a sweet, vegetal note and a little more color. Cook it until softened, and drain it with the potatoes so excess oil does not make the egg mixture greasy.
With herbs: Fold 1 tablespoon chopped flat-leaf parsley (about 4 g) into the beaten eggs for a fresh finish. Parsley is an optional variation, not essential to the basic potato tortilla. Avoid adding a large amount of watery vegetables, such as raw tomato, because they can make the center wet and interfere with the tortilla setting evenly.
Smaller portions: The mixture can be divided between two smaller skillets, but each tortilla will cook faster and should be checked early. Use a plate suited to each pan for turning, and verify that the center reaches 160°F (71°C). For a party, cut one full-size tortilla into bite-size pieces after its resting time instead of trying to make many miniature omelets.
Storage and Reheating
Refrigerate leftover tortilla within 2 hours of cooking, either whole or in portions, in a covered container. It keeps for 3 to 4 days in the refrigerator. It is also pleasant cold or at room temperature, but do not leave it sitting out for more than 2 hours; discard it if it has been held at room temperature longer than that. For best texture, store it separately from juicy salads or sauces.
To reheat, warm a portion in a covered skillet over low heat, turning once if practical, until the center reaches 165°F (74°C). Check with a food thermometer, since warming the outside does not guarantee the middle is hot enough. A microwave also works: heat a slice in short bursts, turning or repositioning it between bursts, then confirm 165°F (74°C) in the center. Reheating can make the eggs firmer, so use gentle heat and stop as soon as it reaches the safe temperature. Freeze leftovers in airtight wrapping for up to 2 months for quality; thaw in the refrigerator and reheat to 165°F (74°C).
Frequently Asked Questions
What does tortilla española mean? It means Spanish omelet. The dish is also commonly called tortilla de patatas, or potato omelet. In this context, tortilla does not mean the thin flatbread familiar from Mexican cooking; the Spanish dish is a thick omelet made with potatoes and eggs.
Is onion traditional in Spanish tortilla? Both onion and no-onion versions are common. The preference is often debated, and recipes vary by cook and region. This recipe includes one medium onion for sweetness, but you can leave it out without changing the basic method or the other quantities.
Why are the potatoes cooked in so much oil? The oil gently softens the slices and helps them cook evenly without becoming dry or crisp. Most of it is drained before the eggs are added, so the finished omelet does not contain all of the oil used in the pan. Handle and pour the hot oil carefully, and save it only after it has cooled.
Can I make tortilla española ahead? Yes. Cook it, let it rest, and refrigerate it in a covered container within 2 hours. It can be served cold or brought to room temperature for a short serving period. If you prefer it warm, reheat portions until the center reaches 165°F (74°C), and do not keep it unrefrigerated for an extended time.
How do I stop the tortilla from breaking when I flip it? Let the first side set until it releases at the edge, then use a plate wider than the skillet and hold it firmly against the pan. Invert in one decisive movement, keeping the plate supported with an oven-mitted hand. If the mixture is still very loose, cook the first side a little longer over low heat before turning.
Can I use less olive oil? You can use a smaller amount in a wide nonstick skillet and turn the potatoes often, but they may brown more and soften less evenly. The traditional gentle-cooking method uses enough oil to surround much of the potato mixture, then drains it before the eggs are added. If reducing the amount, lower the heat and check that the potatoes become tender before combining them with the eggs.
Related
- Spanish Recipe Blogs: A Classic Tortilla Española
- Spanish Recipe Cards: A Classic Tortilla Recipe
- Traditional Spanish Food: Classic Spanish Tortilla Recipe
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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