Spanish tortilla, potato omelette, ingredients in large pan on stove

spanish tortilla potato omelette omelette ingredients large pan stove shaken oil sizzling hand fork gas fire tortilla de patatas spanish omelette tortilla vegetarian dish settling poach potatoes egg beaten egg mix cooking spanish food mediterranean recipe gastronomy fried onion spanish homemade preparing food meal home cooking preparation traditional comfort food tapas healthy unhealthy oily bubbling