Place onions with sugar and spices, pepper and salt to taste, in pure malt vinegar and boil gently until the onions are nearly done. Let it cool a little and then stir in beaten eggs and sufficient crumbled ginger-bread to make the whole quite thick. Place again over the fire for a few minutes, stirring frequently and mashing the mixture into a uniform paste, but be very careful that it does not boil.
The International Jewish Cook Book (1919).