2 peeled russet potatoes
1/2 cup water
1/4 cup grated parmesan cheese
2 tablespoons horseradish
Salt and pepper
Bring a large saucepan of water to a boil, then toss intge potatoes. Cook the potatoes for 10 minutes, then fish them out of the water and turn off the heat. Let the potatoes cool a bit, then move them to a cutting board. Slice the potatoes very thinly (think less than 1/4-inch).
Heat a large skillet with plenty of olive oil over medium high heat. Fry the potato slices until golden brown, about 2 minutes per side. Depending on how large your pan is, you may need to fry the potatoes in shifts. When the potatoes are golden brown, turn them out onto a plate lined with paper towels. Wipe out the skillet and set aside.
In a large bowl, beat eggs with water, Parmesan cheese, and horseradish. Season the mixture with ½ teaspoon kosher salt and black pepper. Drop the fried potato slices into the egg mixture and stir until fully incorporated.
Heat 2 tablespoons more olive oil in the skillet over medium, then pour in the egg and potato mixture. Let the mixture cook for at least 5 minutes before checking underneath to make sure it’s cooking. Now, with confidence, flip the rafanata out onto a plate so the cooked side is exposed (the best way to do this is to place a large dinner plate over the pan, then flip the pan, catching the rafanata). Slide the rafanata back into the pan, cooked side up, and cook for another 3-5 minutes.
Slide the rafanata out onto a serving plate and slice into wedges. Serve with sour cream, mustard, or solo.