That is interesting to me Berrybush. I'm new to soap making. I started off with a soap making class this past January, and in class we made a goats milk soap. The teacher had her goats milk frozen in a gallon sized bag that she let warm up a bit before using a rolling pin to hack off chunks. By the time we added the lye, it was a frozen slushy mixture, but it did seem to heat up. We didn't measure the temperature in class, she just said to soap at around 112 degrees or less. By the time I went to make my own soap for the first time, I used my meat thermometer, and found that my oils cooled down to about 105 or so, but my goats milk and lye mixture was only around 70, but I did mix the lye into the milk as it sat in an ice bath. I wasn't sure what to do so I soaped with the wide temperature spread between the oils and the lye mixture anyway. The chemistry worked, and I ended up with a nice slab of soap that cured up just fine.
Now, I have a few goats milk recipes under my belt. I bought a laser thermometer to make it easier to test my temps. What a great tool! I am now soaping them when the oil and lye mixture is in the 90 degree range, and so far so good for me. My soaps have stayed light in color, and they seem to set up great. I have had no curdling issues so far. Since I have never used ice cube shaped milk, I have not experienced the mixture being too cold, and I wonder if that would be a factor in the future.
|