Thank you for the link mreheater!
Here's what the site 'vietnamgear' mentiones about the booklet:
quote: "The Charlie Ration Cookbook was produced by McIlhenny Company and could be ordered from advertisements in various magazines. It contained numerous recipes for meals that soldiers could make using C-Ration ingredients and McIlhenny's Tabasco Pepper Sauce. Each book was wrapped around a bottle of Tabasco and shipped in a green waterproof canister."
pic's (from georgia-outfitters.com)
:
- the package

- order form from McIlhenny

- booklet and envelope

How about this booklet 'canteen cup cookery'?
(july 1985)