From 1922:
Mix 2 tablespoonfuls powdered loaf sugar with the same weight of butter beaten to a cream, 1 breakfastcupful flour, and half a teaspoonful essence of lemon. Work all together, and cut in pieces the size of a walnut. Make a wafer iron hot, rub it inside with butter, put in a piece of dough, press the iron well together upon it, and bake a delicate brown; then take it out and slip in another piece of dough. This must be repeated until all are done. Bake in a moderate oven four or five minutes.