Basic Castile Soap

READY IN: 384hrs 15mins




  • Heat the olive oil on low flame to approximately 80-85 F.
  • Dissolve the lye in the water.
  • Cool to about 70-75 F.
  • Pour the lye solution in a thin, steady stream, into the oil with slow, even stirring.
  • You shouldn't be heating the mixture at this time.
  • Continue stirring until a thick, honeylike texture is obtained.
  • This will take 10-20 minutes.
  • Note: If the soap mixture does not become thick within 30 minutes, and there is a greasy layer on top, it may be too warm.
  • If this happens, set the container in cool water and keep stirring from the sides and the bottom.
  • Contrastingly, if the mixture is lumpy, it may be too cold.
  • If this happens, set it in a pan of warm water and stir until the lumps disappear.
  • Pour the thickened soap mixture into your molds.
  • Cover.
  • Keep warm for a minium of 24 hours.
  • This allows the saponification process to take place slowly and will prevent the mixture from separating.
  • You can wrap your soap molds in an old blanket.
  • When the soap is set, remove it from the molds and cut it into bars.
  • Allow the soap to age for atleast 2 weeks in a dry place.
  • Note: If the soap is crumbly or has streaks of grease, it may be reclaimed as follows: Cut the soap into fine pieces.
  • Add 2 cups of water and dissolve over low flame.
  • Stir occasionally.
  • When the lumps have disappeared, increase the heat and boil until the soap appears thick.
  • Pour soap in molds and continue as explained above.