Boil potatoes in water until done.drain, and peel. Press through a ricer.
With a electric hand -beater mix mashed potatoes with eggs, flour, parmesan and caraway until you have a thick dough. Add a little club soda and blend until you have a slightly running batter, like a thick pancake batter
Preheat the waffle iron, rub with the fat-side of the bacon rind. Add the batter and bake to a golden brown. After each waffle rub the iron with the bacon rind before making another.