01 - Wrap grated raw potatoes in a clean kitchen towel and squeeze firmly to extract as much liquid as possible. This step is crucial for achieving crispy pancakes.
02 - In a large mixing bowl, combine the squeezed grated potatoes, mashed potatoes, finely sliced scallions, and melted butter. Stir until evenly distributed.
03 - In a separate bowl, whisk together the all-purpose flour, baking powder, kosher salt, and black pepper until thoroughly blended.
04 - Add the dry ingredient mixture to the potato bowl. Pour in the milk and mix gently until a thick batter forms. Avoid overworking the mixture to prevent tough pancakes.
05 - Heat 1 tablespoon of vegetable oil in a large nonstick skillet over medium heat until shimmering.
06 - Scoop approximately 1/4 cup of batter per pancake into the skillet. Gently flatten with a spatula to form even rounds.
07 - Cook for 3 to 4 minutes per side until golden brown and crispy. Add additional oil between batches as needed to maintain proper frying conditions.
08 - Transfer cooked pancakes to a paper towel-lined plate to absorb excess oil. Serve immediately while hot, garnished with additional sliced scallions if desired.