908g lard
114g coconut oil
114g olive oil
432g water
156g lye
38g essential oils (e.g., mix of sandalwood and tea tree)

  • if varying fats at all, double-check using soapcalc
  • measure fats into crockpot and heat on low heat until completely melted
  • measure water in heat-proof mixing bowl or pyrex pitcher
  • wearing gloves and safety goggles in a well-ventilated area:
    • measure lye in a separate container and slowly add to water
    • stir carefully with wooden spoon until mixture clears
  • pour lye mixture into oils and mix well
  • rinse all lye tools and containers with water and neutralize with vinegar
  • blend with stick blender for 4-5 minutes, until mixture is opaque and starting to thicken, and reaches “trace” (when the surface no longer immediately goes back to flat)
  • cover and heat on low heat for 30-60 minutes, stirring every 10 minutes, until thickened and bubbling over the entire surface
  • remove crock from heat and add essential oils
  • spoon soap mixture into molds and cover with parchment paper
  • age for 24 hours and then remove from molds and cut

Source: http://wellnessmama.com/23840/slow-cooker-soap-recipe

2014-12-26 19:16:50: Equipment list:

  • crockpot
  • stick blender
  • pyrex pitcher
  • gloves
  • safety goggles
  • oil container
  • lye container
  • scale
  • heat-proof spoon
  • spatula
  • thermometer
  • vinegar
  • parchment paper
  • molds

2015-01-23 07:38:49: The soap is great, but a little slimy and olive colored. I’ve seen recommendations for adding palm oil or lard to firm up the soap and lighten the color. So the ratio would be: 50% olive oil, 30% lard, 20% coconut oil.

2015-02-14 14:55:56: valentine’s day lavender soap:

500g olive oil
300g vegetable shortening (soybean & cottonseed)
200g coconut oil

380g water
138g lye

31g fragrance

2015-12-18 09:22:32: bro soap (broap):

190g beer (PBR, completely flat)
69.65g lye

350g lard
75g olive oil
75g coconut oil

2018-03-18 19:01:19: Only had 45g of lye left, and realized the batch would be way too small — prefer to do double the batch size of these recipes (approx. 140g lye and 1kg fat).

2018-03-21 16:03:41: 3/21/18: spring snowfall batch:

  • 380g water
  • 142g lye
  • 700g lard
  • 200g coconut oil
  • 100g olive oil
  • 1 Tbsp. sandalwood oil

2018-10-21 14:22:33: fall batch

  • 513g water
  • 188g lye
  • 950g lard
  • 200g coconut oil
  • 100g olive oil
  • 100g avocado oil

2020-10-25 14:32:31: Fall 2020

  • 380g water
  • 142g lye
  • 31g fragrance
  • 550g lard
  • 225g olive oil
  • 225g coconut oil

2021-11-14: fall batch

  • 475g water
  • 176g lye
  • 750g lard
  • 250g coconut oil
  • 250g olive oil
  • 38g sandalwood oil yield: 1720g

2023-07-08: summer batch, updating main recipe with current mixture (reducing coconut and olive oils because we have a water softener now and it’s too slippery)

2024-05-05: with a water softener, soap feels very slippery. reduce superfat to 1% to see if that helps.