@eribosot Reminds me of the edition of Joy Of Cooking for which they had to apologize ("we lost our way") in the introduction to the next edition.
Each chapter (there was an entire chapter just on salad dressings) was written by a luxury restaurant chef specializing in that thing. They all made a point of how regular grocery store ingredients are inferior and you really should hunt down a specialty shop with the fancy stuff.
Two of my favorite glaring examples of what went wrong: