Prepare the Potatoes and Onion: If using a food processor, peel and cube the potatoes and onion. Process them in the food processor until the potatoes look "grated." If using a grater, simply peel and grate the potatoes and onion.

Remove Excess Liquid: Place the potato mixture into a fine strainer or kitchen towel and squeeze out almost all of the liquid into a mixing bowl. Discard the liquid, but keep the potato starch that settles at the bottom of the bowl.

Combine Ingredients: Return the potato mixture to the bowl with the potato starch. Add eggs, flour, salt, and pepper. Mix everything well to combine.

Fry the Pancakes: Heat vegetable oil in a large, non-stick skillet over medium heat. Spoon the potato mixture into the skillet, spreading it slightly to form pancakes. Fry for 2-3 minutes on each side until crispy and brown.

Serve and Enjoy: Place the cooked pancakes on a paper towel to absorb excess oil. Serve hot and enjoy!