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 and mashed cooked potatoes.
03 - Add the flour, baking powder, salt, and pepper. Mix well.
04 - Stir in the melted butter and milk, mixing until a thick batter forms.
05 - Heat a large skillet or nonstick frying pan over medium heat and add a little butter.
06 - Drop heaping tablespoons of batter onto the skillet, flattening slightly to form pancakes.
07 - Cook for 3–4 minutes per side, or until golden brown and crisp.
08 - Transfer to a plate lined with paper towels. Repeat with remaining batter, adding more butter as needed.
09 - Serve hot, garnished with chives or scallions if desired.