01 - Place the grated raw potatoes in a clean kitchen towel and squeeze out as much moisture as possible.
02 - In a large bowl, combine the grated raw potatoes, mashed potatoes, sliced scallions, and melted butter.
03 - In a separate bowl, whisk together the flour, baking powder, salt, and pepper.
04 - Add the dry ingredients to the potato mixture, then pour in the milk. Mix until a thick batter forms; do not overwork.
05 - Heat 1 tbsp oil in a large nonstick skillet over medium heat.
06 - Scoop about 1/4 cup of batter per pancake into the skillet, flattening gently with a spatula.
07 - Fry 3-4 minutes per side, or until golden brown and crispy. Add more oil between batches as needed.
08 - Transfer cooked pancakes to a paper towel-lined plate. Serve hot, garnished with extra scallions if desired.