Potato omelettes can be altered to accommodate different tastes: with or without onion, with a range of degrees of doneness, etc.

Best tricks for a perfect Spanish-style potato omelette

The Spanish-style potato omelette has sparked an historical debate: with or without onion? Setting this question aside, today we’re sharing the ultimate tips to make it perfect.

BY Silvia Cardona | 26 January 2026

The Spanish-style potato omelette is one of the most typical Spanish recipes. It requires just a few ingredients but mastering it can be very challenging. Here we list some tips shared by expert chefs to achieve the perfect potato omelette.

 

High-quality ingredients

The Spanish-style potato omelette is made with very few ingredients, but their quality can make a big difference in the result.

The potatoes must be fresh and firm. The most highly recommended varieties for frying are agria and kennebec. On the other hand, it is advisable to avoid potatoes which have sprouted, have a wrinkled skin and/or feel soft when touched.

On the other hand, eggs should also be very fresh and high-quality. Therefore, it is important to check the best-before date: the further away you are from that date, the fresher the egg will be. Furthermore, organic eggs (code 0) or free-range eggs (code 1) tend to taste better, as a result of the hens being raised in better conditions and fed a better diet.

 

Most cooks recommend the following proportion to ensure a moist and well-balanced texture: 1 egg for every 100 grams of potatoes, approximately. 

 

Moreover, potato omelettes can be altered to accommodate different tastes: with or without onion, with a range of degrees of doneness, etc. However, the basic preparation steps are always the same.

 

Traditional Spanish potato omelette recipe

Ingredients:

  • 600 g kennebec or agria potatoes
  • 7 fresh eggs
  • Extra virgin olive oil
  • Salt

     

Preparation:

  1. Peel the potatoes and cut them in half lengthwise, then into slices about 4 mm thick.
  2. Heat a good amount of oil in a large pan and add the potatoes, which should be completely covered by the oil. Sauté over medium-low heat until tender and slightly golden; this can take about 15 minutes.
  3. Remove the potatoes and place them on a large plate lined with absorbent paper. Add salt to taste and toss.
  4. Beat the eggs in a large bowl and add a pinch of salt.
  5. Once the potatoes are well strained, fold them into the beaten egg gently, making sure they don’t break.
  6. Pour the mixture into a hot non-stick frying pan with a drizzle of oil. Allow the omelette to set on one side over medium heat until the moment when, shaking the pan, the whole omelette comes unstuck and slides around.
  7. With the help of a plate, turn the omelette over and cook on the other side for a few (not too many!) minutes; Remove from the stove.

The cooking time of such an omelette will depend on your personal preference. You may prefer your omelette moist or well-done.

 

Some mistakes to avoid and why

Even following a good recipe, there are some small oversights that can ruin the final result of a potato omelette. Therefore, it is very useful to be aware of the most common mistakes and understand why they happen.

  • Frying the potatoes over high heat from the start will brown them on the outside while the inside is still raw.
  • Not using enough oil to fry the potatoes prevents them from cooking evenly.
  • Not straining the potatoes thoroughly before adding them to the beaten egg will add too much fat to the omelette and prevent the eggs and potatoes from sticking to each other properly.
  • Turning the omelette over too early (it can fall apart) or too late (it will be very dry). You will have to learn to tell when is just the right moment.
  • Using a pan that is too big will spread out the mixture too far, making it difficult to flip the omelette, and the result will be too thin. A smaller-diameter pan is always preferable, producing a thicker, juicier and more attractively shaped omelette.

The nutritional value of a potato omelette and recommended side dishes

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january 2026