Tortilla de Betanzos is a Spanish dish originating from the Galician municipality of Betanzos. This dish is basically a local variety of tortilla de patatas or Spanish omelet. In Betanzos, it consists of potatoes, eggs, oil, and salt, nothing more and nothing less, so don't even think about tasting onions or chorizo in this local delicacy.

The city became famous for its omelets because of a local woman, Angelita, who always prepared them without onions. But there's more – the eggs have to be really runny (resulting in really juicy omelets), while local high-quality potatoes have to develop a perfectly golden color during the frying process.