Whip the Base: In a large mixing bowl, use an electric mixer at medium speed to blend the mashed potato, milk, vanilla extract, and salt for about 2 minutes until well combined.

Dough Formation: Gradually add powdered sugar, one cup at a time, mixing until the dough forms. If after 6 cups, the dough feels too soft, add more powdered sugar incrementally until you achieve a cookie dough-like consistency.

Rolling Out: Lightly dust a clean surface with powdered sugar. Roll the dough into a 1/8-inch thick rectangle, aiming for a 10x12-inch size. Trim the edges for a neat rectangle.

Adding Peanut Butter: Lay down another piece of parchment paper, sprinkle with powdered sugar, and flip the dough onto it. Remove the top parchment layer (the original rolling surface) and evenly spread the peanut butter over the dough.

Roll and Chill: Starting from one long side, tightly roll the dough, using the parchment paper as guidance. Wrap the candy roll in parchment and freeze for an hour to firm up.

Slice and Enjoy: Cut the candy into 1/4-inch slices. Store any leftovers in an airtight container in the refrigerator.

This Old Fashioned Potato Candy is more than just a recipe; it's a journey back in time, offering a slice of nostalgia and the joy of simple, yet profound flavors. Whether you're introducing it as a new holiday tradition or satisfying a curiosity for unique sweet treats, this candy is sure to impress with its delightful texture and rich sweetness. Embrace the charm of traditional cooking and enjoy the unique experience that comes with making and savoring this beloved confection.