Tortilla Española, or Spanish omelette, is a classic dish that is made with eggs, potatoes, and onions. The ingredients are cooked together until they form a thick omelette-like dish that is typically served in slices. Tortilla Española is a versatile dish that can be enjoyed as a tapas, a main course, or even as a filling for sandwiches. It is a staple in Spanish cuisine and a must-have when dining at Sol Madrid.