Hướng dẫn

• 1 - Prepare the Potatoes:
  Peel and thinly slice the potatoes. If using, slice the onion thinly as well.
• 2 - Cook Potatoes and Onion:
  In a large frying pan, heat olive oil over medium heat. Add the potatoes and onion, cook gently until soft.
• 3 - Beat the Eggs:
  In a bowl, whisk the eggs and season with salt and pepper.
• 4 - Combine Ingredients:
  Once the potatoes are cooked, drain excess oil and combine with the egg mixture.
• 5 - Cook the Tortilla:
  Pour the mixture back into the frying pan and cook on low heat until the eggs are set. Flip to cook both sides.
• 6 - Serve:
  Let it cool slightly, then slice and serve warm or at room temperature.