My grandparents made it when my dad was a little boy. And the recipe was passed on down to him when my grandparents passed away.
1/2 pound raw potato
1/2 pound mashed potato
1/2 pound plain flour
salt and pepper
Mix the grated mashed potatos with onion. stir in the flour and egg. preheat lightly grease griddle or frying pan. Add enough milk to potato mixture for a thin enough batter that will drop from a spoon.
Use a 1/4 cup to spoon a griddle.
Grill 3-4 minutes on both sides.