These are pictures from when I made two small tortilla de patatas at home with my host father and sister.
My host father explained that he takes one potato per person plus 2 potatoes. So if you're making this for a family of 5, you should use 7 potatoes. If you're just making it for yourself or maybe one other person, you could still make extra and save it for the next day. Here, it is common to eat the left overs the next day on a sandwich!
Ingredients:
6 potatoes
6 or 7 eggs (I think we ended up using 7)
half a large onion
1/4 - 1/2 cup of milk
olive oil
salt
1. Peel potatoes
2. Chop up potatoes!
You can just chop it into small-ish chunks if you'd like. My host father says his family chops it up more in random pieces like in the picture below.
3. Heat a pan of olive oil over high heat.
Test to make sure it is hot enough by adding one piece of potato and making sure it bubbles
4. Add potatoes to the pan
Lower heat slighty
Stir every couple of minutes for even cooking

6. Cook for another 5-6 minutes or until potatoes are completely cooked and just starting to brown

7. While the potatoes are cooking...
Mix 6 or 7 eggs (about same amount as potatoes used)
Add a good splash of milk
Whisk together for a few minutes until there is no separation
Add a little salt
8. Take potatoes out of pan and drain oil
Place on paper towel to remove access oil
9. Add potatoes into the egg mixture
10. mix together slowly making sure you don't mash up all the potatoes.
11. Heat pan and add a little olive oil
We used a smaller pan and made two because they're easier to flip (so I suggest doing this)
You could also use one large pan instead
12. If using small pans like we did, add half the mixture to the pan, then decrease the heat to low-medium
13. Cover and cook
Keep an eye on it... you want it to be more than half way cooked through so you're able to flip it onto a plate.. but the top should still be raw egg and you don't want the bottom to be burnt
About 8-12 minutes maybe
14. Now is the tricky part... The Flip!
I took a video of my host father doing it so you could see what to do.
Flip the omelet onto a plate
Turn up the heat and add more oil to the pan
Slowly return the omelet to the pan, raw egg side down of course
15. Cook for just another 1-2 minutes and its done!
This one was mine! YUM!
Ta-dah!! Tortilla de Patata, a Spanish omelet! Give it a try and let me know how it turns out!