Place two quarts of water, one can of lye, and five pounds of grease in a wash pot or enameled vessel. (Never use aluminum for the lye eats it up.)
Let this mixture boil until all fat is consumed and mixture gets about as thick as the gooey for banana pudding.
Put in three quarts of cold water and boil about ten minutes. Remove from fire and stir with a paddle until it is too thick to stir.
Let stand in cool place overnight and cut out in squares.
We always made three cans of lye at least and it is hard to guess at the amounts here. Good Luck to you.