I'm not affiliated with aussie soap supplies but I love them (really nice people too!)
They do sell various types of preservatives if you make for instance, face cream, and want to preserve it for a while, they sell stuff for people who actually go on to sell finished products. However saying this I haven't seen the "taste of vegetarian" book. I think a friend has it, I might have a look. I'm picky with books as I don't eat grain nor do I eat sugars (however at the moment I do eat the likes of Natvia)... so even gluten free recipes aren't restrictive enough for me.
This said, making stuff is a lot of fun!!!