Irish recipes make inventive use of potatoes and working people relied heavily on recipes that mixed them other ingredients to make them stretch farther.
Preheat oven to 400F and grease a baking tray or line with tin foil.
Mix together the potatoes and flour and rub in the fat. Add the sale and enough milk to make a pliable dough.
Roll out on a floured board or work area to a thickness of 1/4" or 1/2" thickness depending on your preference and cut into rounds with a cutter from 2 to 2 1/2 inch in diameter.
Place on the prepared tray and bake for 15-20 minutes until golden. Remove from the oven and serve piping hot, spread with butter.