Started making soap three days ago, just olive oil and lye solution. The book said to expect the oil to separate and to simply stir it down every twelve hours– okay, so I followed the directions for a day.
Then the tinkerer part of my brain said “Trust no one.” and I decided to listen to my inner tinkerer since the soap pan was dead cold. I poured the batch back into my pot and slowly took the heat up to 135 degrees f. and stirred like a maniac for forty minutes. HA! Houston we have soap.
I poured the batch back into my primary mold and rewrapped it. Then I did the foam test in the empty pot (toss a pinch of salt into the residue and then hit it with warm tap water)– beautiful lather. Then I ph tested it. Flat yellow– absolutely neutral. Our tap water isn’t even absolutely neutral (probably the reason that I had to reactivate saponification with exterior heat). This morning I surface checked the batch and my inner tinkerer said “I told you so.”
Castile soap is awesome stuff, but I have never made it before. Plenty of homesteader batches, plenty of vegetable and beeswax batches but never have I used just an oil to make soap– I was desperate though– the soap that I was buying is no longer being carried at any of the stores within walking distance to our house and the one store that has it in Salem sells it for over $5 a bar. So I had to try– even if it was a complete failure– I just had to at least once.
I’ve made soap from bear fat before– a friend of mine had a friend that hunted bear and was given a large portion of the fat, she’d wrapped it and frozen it and when she was moving (about 5 years later) we came across the frozen fat and she gave it to me. I didn’t want to use it for food, so I thawed it and rendered it for soap. It was glorious soap– deep golden, soft little bubbles for the lather, very gentle.
My big soap ‘failure’ to date was duck fat. Another friend worked at a Chinese restaurant and diligently saved 10 lbs. of duck fat for me. It was awful soap, it didn’t want to set up (after weeks) and when it finally did, it started to curdle. I put it into the pressure cooker and forced it back into shape, then milled it after it hardened (or rather got less soft) and finally ended up with less mushy harsh balls of soap. We did discover that it quickly broke the oils from poison ivy after one fateful hike, so I guess the harshness paid off in the end.
We have an IR thermometer, point the lazer at what you want to measure and there’s a digital read out in kelvin or Fahrenheit, way slicker than trying to use candy thermometers (to check the accuracy I did use a candy thermometer in the olive oil as I was heating it– spot on readings.)