Spanish Potato Omelette (Tortilla de patata)
2 medium-sized potatoes or 4 small ones (type depends on taste, I like to use baking spuds because I like them getting a bit crumbly, but choose waxy ones if you prefer a firmer potato)
4 eggs
Olive oil
Salt and pepper
You can add practically anything you want to this basic recipe: cheese, peas, tomato, peppers, onion, herbs, diced chorizo... I like to add a bit of dried powdered garlic and onion for flavour, but I prefer my tortilla plain and simple, they way it's eaten in most tapas bars in Spain.
Peel and slice the potatoes, not too thinly. Rinse under the tap and put them in a microwavable dish (ideally one of those contraptions with a basket that allows you to steam in the microwave).
Drizzle some oil over the sliced potatoes (approx. 2 tbsp), sprinkle a pinch of salt and cook at 100% for 5 minutes.
Remove, stir, cook for 5 min more. Prod the potatoes with a spatula or wooden spoon to make sure that they are done. Cook for another couple of minutes if necessary. The potatoes need to be cooked before the next step, as they will cook only very briefly as part of the tortilla.
In another bowl, whisk the eggs with salt and pepper to taste. Add the cooked potato slices, stir well so that all the potato is well covered in egg.
With regards to the frying pan, I use a 20 cm one. It's easier to make a tortilla that is small in diameter; if you use a larger pan you risk breaking it when you flip it over. Don't worry if the tortilla looks very thick, it will cook slowly so there will be no undercooked egg in the middle.
Put the frying pan over a high heat and add a slosh of olive oil to it. When it's hot, pour the egg-potato mixture in it, and lower the heat to medium-low. With your spatula/wooden spoon, gently stir the potatoes, letting the uncooked egg flow down to the bottom of the pan and set. Keep doing this for a couple of minutes, until there is little liquid egg left.
Now, the crucial bit: flipping the tortilla. Put a large plate over the frying pan, then place your open hand on it, and with your other hand grab the frying pan handle and flip the whole thing over. You'll have a half-cooked tortilla on your plate, with the top looking golden and done, the bottom a bit soggy. Quickly slide the tortilla back into the frying pan, pushing it with your spatula if you need. Cook for some 5-10 minutes over a low heat, to avoid the bottom getting burned or the inside undercooked.
This tortilla can be eaten warm, freshly made, although many people prefer it the next day (some prefer it cold, but it can be reheated in the microwave).
