What is a Spanish Tortilla or Tortilla de Patatas?
Spanish tortilla, also known as Tortilla Española or Tortilla de Patatas, is a traditional Spanish potato omelette. It’s made with thinly sliced potatoes that are slowly cooked in olive oil until tender, then mixed with beaten eggs. The mixture is cooked in a frying pan until it forms a thick, round omelette. Unlike a classic French omelette, which is usually thinner and made primarily with eggs, Spanish tortilla is much heartier and more filling.
What makes Spanish tortilla special is its texture. The potatoes should be completely tender, while the eggs should hold everything together and remain soft and moist. Cooking it over gentle heat ensures an evenly golden exterior and a beautifully tender center.
One of the biggest debates in Spanish cuisine is whether onions belong in a tortilla. Some swear by the classic combination of just potatoes and eggs, while others can't imagine making it without onions.
Why do we adore this Spanish tortilla?
Spanish tortilla is one of those dishes you can make just about any time, since you probably already have most of the ingredients at home. You only need a handful of simple ingredients, but a little patience and the right technique make all the difference.
Here’s why we love this recipe:
- Simple ingredients: All you need are potatoes, eggs, olive oil, salt, and optionally onions.
- Great for every day: Enjoy it for breakfast, lunch, dinner, or as a snack.
- An authentic Spanish dish: A traditional recipe loved and enjoyed throughout Spain.
- Serve it warm or cold: Perfect for making ahead and enjoying later.
- Meatless and gluten-free: This recipe is naturally meat-free and gluten-free.
What we especially love about this Spanish tortilla is how versatile it is. It's perfect warm or cold. You can pair it with a fresh salad, toasted bread or seasonal veggies.
Top 5 tips and tricks
If you want to make a truly delicious Tortilla de Patatas, there are a few simple tips that can make all the difference.
- Choose the right potatoes. The potatoes should become tender during cooking without completely falling apart. We recommend all-purpose potatoes with a medium starch content, as they create a lovely, creamy texture while still holding their shape. Avoid very starchy varieties, which can easily turn mushy.
- Slowly cook the potatoes in oil. One of the most common mistakes is using too much heat. When making Spanish tortilla, the potatoes shouldn't become crispy like French fries. Instead, they should be soft, tender, and infused with the flavor of olive oil. Cook them gently over medium-low heat until completely tender.
- Use enough eggs. Getting the right balance of potatoes and eggs is essential for a delicious, juicy tortilla. Too few eggs can make it dry and crumbly. The beaten eggs should coat the potatoes evenly and hold everything together.
- Choose the right pan. A good-quality nonstick frying pan with slightly higher sides works best. A smaller pan will give you a thicker tortilla, while a larger one will produce a thinner version. Most importantly, the tortilla should be easy to flip without sticking to the pan.
- Let the tortilla rest before serving. Once cooked, let the tortilla rest for about 5 minutes before cutting into it. This allows the center to set slightly, making it easier to slice into neat wedges. It will still be pleasantly warm, with a beautifully soft and tender texture.
Storing
Spanish tortilla is best enjoyed fresh, either warm or cold. One of its biggest advantages is that it can easily be prepared ahead of time.
Storing in the refrigerator: Let the cooked tortilla cool slightly, then transfer it to an airtight container within two hours of cooking. Store in the refrigerator for up to 3 days. You can serve it straight from the fridge, but we find that gently reheating it brings out its flavor even more.
Reheating: Reheat the tortilla in a covered frying pan over low heat until heated all the way through. Add a few drops of olive oil if needed. You can also reheat it in the oven at 160°C (320°F), being careful not to dry it out.
We don't recommend freezing Spanish tortilla, as it can affect the texture of the potatoes and eggs.
Frequently asked questions and answers (FQA)
Do I have to use onions in a Spanish tortilla? No. Traditional Spanish tortillas are made both with and without onions. Onions add a lovely sweetness and extra moisture, but you can make an equally delicious potato omelette using just potatoes and eggs.
Why is my tortilla falling apart? The most common reasons are not using enough eggs, not cooking the bottom long enough, or flipping the tortilla too soon. Using a good nonstick frying pan and a large, flat plate for flipping also makes a big difference.
Is Spanish tortilla vegetarian? Yes. Traditional Spanish tortilla is made with potatoes, eggs, olive oil, salt, and optionally onions, making it suitable for vegetarians. The basic recipe is also naturally gluten-free.
How to make Spanish Tortilla (Tortilla de Patatas) at home (video)
Check this short video to master the recipe at home.
Next, try these omelette recipes
- Tortilla de patatas with anchovies and baby spinach
- Potato Tortilla with Tuna
- Gratin Omelette with Mackerel
METHOD
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prepare the onion and potatoes
Peel the potatoes and cut them into approximately 3–4 mm (⅛-inch) thick slices or smaller pieces. Peel the onion, cut it in half, and thinly slice it. In a large bowl, whisk the eggs and season with salt and pepper.
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fry the onion and potato
Pour the olive oil into a large frying pan and heat over medium heat. Add the potatoes and onion and cook gently for 15–20 minutes, stirring occasionally, until completely tender. The potatoes should be soft but not crispy or overly browned.
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stir the potatoes with eggs
Using a slotted spoon, remove the cooked potatoes and onion from the pan and drain off any excess oil. Add them to the beaten eggs and gently stir to combine. Let the mixture rest for 5 minutes to allow the flavors to come together.
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cook the tortilla
Place a 24 cm (9½-inch) frying pan (Tefal Unlimited) over medium heat and add a tablespoon of the reserved oil. Pour in the egg and potato mixture and spread it evenly. Cook for approximately 3–5 minutes, until the bottom is golden brown and the edges are set.
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turn the tortilla
Lightly dampen a large, flat plate with water and place it over the pan. Carefully flip the tortilla onto the plate, then gently slide it back into the pan. Cook for another 2–3 minutes, until the outside is golden and the center is still soft and tender. A traditional Spanish tortilla should have a soft center, but you can cook it for another minute or two if you prefer it more set.
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serve
Transfer the cooked tortilla to a serving plate and let it rest for a few minutes. Cut into wedges and serve. It’s delicious warm or at room temperature, especially with a fresh seasonal salad on the side. You can also enjoy it cold, making it perfect for picnics, packed lunches, or sharing with friends.
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