Melt the butter in olive oil. Slice a large white onion and fry over a low heat for about 15 minutes, until soft but not brown.
2
Add 400g peeled and thinly sliced potatoes to the pan, cover and cook for a further 15-20 minutes, stirring occasionally, until soft.
3
Add eight beaten eggs, mix, and let the tortilla cook gently for about 20 minutes.
4
Turn your tortilla by placing a plate on top of the pan and flipping it upside down so the tortilla is on the plate. Then return the tortilla to the pan. Shake the pan occasionally until cooked through.
5
Serve straight away, or do as the Spanish do and serve at room temperature.
Really enjoy breakfast ideas