Serves 4
A popular tapa served in bars and cafes across Spain, tortilla is a versatile treat that is served warm or at room temperature, for lunch or with drinks. The traditional recipe calls for potatoes fried in olive oil and combined with eggs (and sometimes onion), all cooked into a thick omelet. Like Italian frittata, which it most resembles, there are many variations. Here, spinach is added to the egg-potato batter before the tortilla is cooked. Flipping the tortilla is the only tricky part. Slide it onto a plate, top it with another plate, and invert them together. Then slide the tortilla back into the pan to finish cooking. After making one, you'll want to do it again quickly and have tortilla on hand, just like every Spanish home does.