I have a question about saturated vs. unsaturated fats ratio. Can someone help me understand why I have read that soap makers should aim for a 60:40 ratio? Most of the recipes I have done so far (from Watson's book) do not have that ratio. I know that the soaps will still work even if they don't have that ratio, but it's still confusing why that should be the 'recommended' ratio.
btw, I made a light purple soap today with some of my classic lavender fragrance oil. It smells great! but it traced fast.