He did a peer-reviewed, double-blind study with 1000 test subjects over the course of 10 years.
Only 1000 subjects? I hope it was a large effect size!
The included recipes were of the "introductory level" type that would of course be passable, but devoid of any complexity. I've made enough sauces now that I can make a pretty good guess on how it'll turn out with various ingredients.