slowly pour the lye into the water in a pyrex, iron, or enamel vessel (caution: don't spill lye solution on your skin, clothing, or furnishings, as it is extremely caustic). stir until the lye is completely dissolved. then let cool to the correct temperature as shown in the table to follow.
     melt fat to a clear liquid and let cool to correct temperature as shown in table, or until the fat offers resistance to the spoon. stir occasionally to prevent crystals from forming. pour the lye solution into the fat in a thin, steady stream with slow, even stirring. [rapid addition of lye solution or hard stirring is apt to cause a separation). A honey-like consistency is formed which becomes thick in from 10 to 20 minutes.
     pour the thickened mixture into a wooden box that has been soaked in water and lined with clean cotton cloth wet in water and wrung nearly dry. place in a protecting pan. cover with a board or cardboard, then with an old rug or blanket to retain the heat while it is texturing out. Leave it alone for 24 hours.
      to remove the soap from the mold, lift it by the ends of the overhanging cotton lining. cut into bars by wrapping the soap with a fine wire and pulling the wire through. place so air can reach it, but avoid drafts and cold. Aging improves soap. in 10 to 14 days it is ready for use.

Follow the temperatures in the table below closely

sweet lard or other soft fat 98F 77F
half lard and tallow 105F 83F
all tallow 125F 93F

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