
Classic Spanish Omelette with Onion
The most popular version of Spanish tortilla: potatoes, eggs, olive oil and slowly cooked onion for sweetness and extra moisture.

Backed by 70.4% of the population according to CIS surveys. Slow onion caramelization balances the potato texture and savory depth.
“Slow-poached onions provide essential juiciness and sweetness.”
Recipes featuring or representing this ingredient (2)

The most popular version of Spanish tortilla: potatoes, eggs, olive oil and slowly cooked onion for sweetness and extra moisture.

Ferran Adrià's iconic 1998 creation served in a glass: potato foam, slow caramelized onion marmalade, and warm emulsified egg yolk.
Accessible difficulty for home cooking beginners.
Requires skill controlling oil temperature and plate-flipping technique.
They argue that sweet vegetables mask the clean taste of egg and potato. They revere the runny, golden center of the Betanzos style.
The emulsifying nexus. Free-range eggs ensure rich golden color and creamy emulsion.
Thermal transmission medium. EVOO infuses fruity aromas and clean frying properties.
Center of Spain's culinary debate. Poached slowly, it adds natural sweetness and rich texture.
The structural base of the Spanish omelette. Varieties like Monalisa or Kennebec yield the best confit texture.
Essential mineral to season potatoes and enhance egg matrix flavor.
Capital of caramelized onion omelettes, traditional bar counter slices, and iconic culinary temples.
Pioneered by Ferran Adrià using siphons, emulsions, or pre-cooked ingredients.
Binding free olive oil from confited potatoes with yolk lecithin to form a velvety emulsion.