Yukon Gold Potato and Jerusalem Artichoke Latke with Apple-Horseradish Mayonnaise
For the apple-horseradish mayonnaise
- 1 2 inch piece horseradish root (peeled and finely grated)
- 1/2 cup unsweetened applesauce
- 2 tsp apple cider vinegar
- 1 tbsp Dijon mustard
- 1 cup mayonnaise
For the latkes
- 3 pounds Yukon gold potatoes (peeled)
- 1 pound Jerusalem artichokes (thoroughly washed)
- 1 large yellow onion (peeled)
- 3 large eggs (beaten)
- 2 tbsp fresh flat-leaf parsley (minced)
- 1/4 cup all-purpose flour
- 1 1/2 cups vegetable oil for frying
For the apple-horseradish mayonnaise
- In a medium bowl, stir together the horseradish, applesauce, vinegar, mustard, and mayonnaise. Season with salt and pepper. DO AHEAD: The sauce can be made and stored, in an airtight container in the refrigerator, up to 3 days.
For the latkes
- Working in batches, use the larger side of a box grater or a food processor fitted with a grater attachment to coarsely grate the potatoes, Jerusalem artichokes, and onion. As they’re grated, transfer the vegetables to the towel-lined bowl. Gather the corners of the towel and wring as much excess liquid as possible from the vegetables.
- Transfer the wrung vegetables to a dry mixing bowl. Add the egg and parsley and stir to combine. While stirring the mixture, gradually add the flour, stirring well to incorporate.
- In a large sauté pan over moderately high heat, heat ¼” inch of oil until hot but not smoking. If necessary, add additional flour, 1 tablespoon at a time, but try to add as little flour as possible to create light latkes.
- Season with salt and pepper and fry until golden brown, about 2 minutes. Flip the latkes and continue frying until golden brown, about 2 minutes. As they finish cooking, transfer the latkes to the paper-towel-lined baking sheet.