This is reasonably comprehensive basic soap-making resource for beginners, but it could be better illustrated, uses ounces/pounds/teaspoon measurements without including metric equivalents, is a bit out of date now and has at least one egregious error. On the plus side, it does cover many different techniques, including cold process, hot process, milk soaps, transparent soaps, soap casting, hand milling, and more. There is a fairly good discussion of on the types of oil /fat/butter used in soap making, although that could be expanded these days, as well as fairly good discussions about scent options (EO vs FO) and colorants.
The author talks about lye discount, and talks about how to calculate it. On page 236 there is an exercise to take you through an example of how to calculate lye discount BUT…. The last line of the calculation is nonsensical, seems to be full of random numbers, the numbers /calculation/math are all wrong, and the answer given for the amount of lye to use is totally incorrect. Doing the math by hand or calculating with an online lye calculator, one would use 2.49 ounces of lye the batch, but the stated answer is 1.5 ounces of lye. This would yield a soap that didn’t set up /harden. Clearly, this is due to someone not checking for errors or proofreading the book before publication of this 3rd edition (10 years ago). Because of this, I don’t think I will trust any of the recipes for recipes given in the book, and will be checking all of the calculations by hand, or with a lye calculator (might as well anyway, since I have to convert them all to metric).
Another big oversight for those who want to come up with their own recipes for soap is that the book never does state the customary or standard amount of water/liquid to include in a soap recipe, which is a pretty big oversight (it’s 30 to 38%, by the way).
There aren’t that many illustrations, and it is hard to envision a lot of these techniques based on just text. Fortunately, this is the day of the Internet, and one can do independent research to find out more.
Many of the recipes contain fairly exotic oils,, but the author doesn’t offer alternatives in the recipes for the more exotic / expensive / hard to find ones for beginners on a budget. There are always options for replacing those with other oils, even if that may change the qualities of the soap a little.
Also, the section on marketing is far out of date. Electronic on-site payment options at vendor markets were fairly primitive 10 years ago, and there are lots more options now. These days I do believe there is much more required in terms of soap labeling, providing the ingredients and weight of the final product and a contact address or phone number in case the user has a problem with the soap. Other things not mentioned include recommendations for having soapmakers insurance, and brief statementts about licensing and tax requirements that may be needed for small businesses.
I am glad that I picked up the basic basics from Internet/YouTube reading and research (and glad that I made several batches of cold-process soap) before picking up this book. Despite some drawbacks this is a fairly quick and comprehensive read for anyone thinking about jumping into soapmaking. Just take the recipes with a grain of salt, so to speak, and do do your own calculations for fat and lye percentages to avoid disappointment.