What’s Postum?
Although remarkably developed and marketed before its time, the product became rather a joke-word because it became sometimes synonymous for a drink of prissies and old fuddy-duddys many of whom thought that drinking it before bedtime kept them "regular"
Pajama Boy would love it today because it was touted as being not only caffeine-free, but trans-fat free, fat-free and sodium-free...and very organic.
Basically it's composed of roasted wheat, bran and molassses. It's still available for sale on E-Bay and in Mormon and Latter Day Saints areas where many religionists eschew caffeine in their diets.
If someone is under a certain age, he or she has probably never heard of Postum. My mom bought some once, back in the day, and it's not that bad-tasting, although some find it bitter without the addition of milk and sugar.
Leni