Perhaps he was thinking of an alternative he'd recently heard of and got the 2 mmixed up,
perique is so expensive that companies have manufactured "perique replacements" to emulate the unique characteristics, I've seen a recipe that BAT had developed as early as 1945!!!!
https://industrydocuments.library.ucsf.edu/tobacco/docs/#id=ytpn0209
And this Three Nuns manufacture flowchart does show that they used a "perique substitute" to compliment the real stuff, probably a cost-saving measure...
https://industrydocuments.library.ucsf.edu/tobacco/docs/#id=fglf0203
I like Hacker's books.
And, if it wasn't for him,
I'd never know that people actually smoked Elephant Butts!
http://www.smokemag.com/pipes/0698/cross.htm