Spanish Tortilla (Tortilla Española)

Spain's iconic potato omelet — thinly sliced potatoes and onions slow-cooked in olive oil, bound with eggs, and flipped in the pan. Served at room temperature.

Ingredients

• 1.5 lbs Yukon Gold potatoes, peeled and sliced 1/8-inch thin (use a mandoline)
• 1 large onion, halved and thinly sliced
• 1 cup extra-virgin olive oil (for confit — you'll reuse most of it)
• 6 large eggs
• 1 tsp salt
• Freshly ground black pepper

Method

1. Heat olive oil in a 10-inch nonstick skillet over medium-low heat. Add potato slices and onion. The oil should nearly cover the potatoes. Cook gently for 20-25 minutes, stirring occasionally, until potatoes are completely tender but not browned. This is a confit — not a fry.

2. Drain the potato-onion mixture through a colander set over a bowl (save the oil — it's now infused with potato starch and onion flavor, perfect for future cooking). Let cool 5 minutes.

3. Beat eggs in a large bowl with salt and pepper. Gently fold in the warm potato-onion mixture. Let sit 10 minutes so the potatoes absorb some egg.

4. Heat 2 tbsp of the reserved oil in the same skillet over medium heat. Pour in the egg-potato mixture. Cook undisturbed for 2 minutes, then reduce heat to medium-low. Cook 6-8 minutes until the edges are set and the bottom is golden, but the center is still slightly jiggly.

5. Place a large flat plate over the skillet. In one confident motion, flip the tortilla onto the plate. Slide it back into the skillet, uncooked side down. Cook another 3-4 minutes until just set.

6. Slide onto a cutting board. Let rest at least 10 minutes — Spanish tortilla is traditionally served at room temperature or warm, never hot. Cut into wedges.

What You're Practicing

What You're Practicing

Confit technique: Cooking the potatoes in olive oil at low temperature (not frying) is a confit. The potatoes become silky and tender without any crispness. This technique is used for garlic confit, duck confit, and any ingredient you want to cook gently in fat.

The flip: This is the moment of truth. Confidence is everything — hesitate and the tortilla breaks. Use a plate that's larger than the skillet, press it firmly against the pan, and flip in one decisive motion. If you're nervous, practice with a cold pan and a folded towel first.

Room temperature serving: Spanish tortilla is one of the few egg dishes that improves as it cools. The eggs firm up, the flavors meld, and the texture becomes more cohesive. In Spain, it's a tapa served at room temperature, often hours after cooking. This makes it ideal for meal prep, picnics, and entertaining.

Mandoline safety: A mandoline creates the thin, uniform potato slices this dish requires. Always use the hand guard. If you don't have a mandoline, use the thinnest setting on a food processor or slice by hand as thinly as possible.