The Spanish omelette a perfect comfort food . . .

The Spanish omelette a perfect comfort food . . .
Fluffiness seems to be a quality much prized for an omelette . .
Tortilla, Spanish Omelette or Spanish Tortilla (not to be confused with the Mexican maize tortilla), is a typical Spanish dish consisting of a thick egg omelette made with potatoes and fried in olive oil.
Most usual ingredients like potatoes, cut into thin slices or in small dices. 
They are then fried in olive oil together with the sliced onions at a moderate temperature until they are soft, but not brown.
The potatoes and onions are then removed, drained, and mixed with raw beaten and salted eggs. This mixture is then returned to the pan and slowly fried. The tortilla is fried first on one side and then flipped over to fry on its other side. Flipping is accomplished with the help of a plate. Other ingredients, like green or red peppers, chorizo, tuna, shrimps or different vegetables, can be added. It can also be made without onions.
Fluffiness seems to be a quality much prized for an omelette . .
Try whisk the eggs whites separately beating the eggs to soft peaks before folding in the beaten yolks, and then the cooked potato and onion.