I make liquid soap in a slow cooker which has low/high settings but I cook (a small batch) on low with no problems. Making soap with glycerine as per the video is dead easy and makes a lovely soap. Just make sure that you use a metal stick blender otherwise a plastic one may melt. :)
I tried the sodium lactate in HP a couple of weeks ago and found that it made the HP more fluid and easier to get into moulds with the resulting texture closer to CP. I used liquid SL and added 2% of oil weight into the lye water once it had cooled to about body temperature. Hardens the soap...
I've only made one batch but I heated the glycerine first and then I added the KOH. It dissolved quickly. Must have been quite hot because later I melted my best stick blender. :?
I melt the hard oils first (in the microwave) and then add the soft oils to them and then add the lye to the oils and stick blend. Works beautifully every time. :wink:
I dissolve the milk powder into some water and add at light trace or I mix it into the oils before adding lye water (I still dissolve in water before adding to oils).
I mostly prefer just the soap but it does depend on the props used and how they are arranged. Go to google images and type in "goat milk soap" and you will get a good idea of what you like and what looks good. Too many props or the wrong sort of prop can look tacky (to me). It's also a matter of...