190g beer, completely flat
69.65g lye
350g lard
75g olive oil
75g coconut oil
10ml tea tree essential oil

  • Pour beer into a jar and cover.  Shake vigorously and release pressure.  Will not stop foaming (because of proteins, but need to get all carbonation out of the beer.
  • Add lye to beer in heatproof container, following usual lye safety protocol.
  • Add lard and oils to crockpot on low heat and melt.
  • Slowly pour the lye mixture into the oils and stir until combined.
  • Mix with a stick blender until the soap is thick and opaque.
  • Cook on low for 30-60 minutes, stirring occasionally, until the soap bubbles up over the entire surface.
  • Remove the crock from heat and mix in the tea tree oil.
  • Pour soap into molds, cover with waxed paper, and allow to set for 24 hours.
  • Remove the soap from the mold and cut into bars.

See http://knittles.ticklefish.org/2015/12/broap/

2016-12-31 13:52:36: Scaled up:

  • 398g water or completely flat beer
  • 148.6g lye
  • 680g lard
  • 210g olive oil
  • 157g coconut oil
  • 10ml tea tree essential oil