Step 1: After washing and peeling the potatoes, chop them into 1-inch pieces. Next, take the onion and also slice it into thin pieces.
Step 2: Add half a cup of oil to the skillet with the setting at medium-high. Allow the oil to heat and then add in the potatoes. Throw in a half-teaspoon of salt and turn down the heat to medium-low. Remember to stir frequently.
Step 3: Add in the onions. Keep them cooking slowly for about 20 minutes.
Step 4: Beat the six eggs in a large bowl. Add a half-teaspoon of salt and whisk.
Step 5: Drain the oil and then mix all together.
Step 6: Add a little of the oil back into the skillet and then pour the mixture back over medium-heat. Keep it there for about 5 minutes.
Step 7: Now flip over one side of the tortilla by inverting the skillet onto the plate.
Step 8: Add some more oil and then slide the uncooked side back onto the skillet for about 3 minutes.