Context is the same as in a previous question.
Summing up: a rebuilt, ultra-modern city state after an apocalypse where everything's produced in underground farms, and as such, certain commodities are extremely rare, coffee and tea being two of these.
In this scenario, it's more like a post-post-apocalyptic age; that is, this particular society has returned to an approximately post-Cold War era development level. Among others, it implies the need for certain less vital nutrition sources, such as energy boosting beverages; production however is absolutely unable to keep up in capacity.
It doesn't mean people are not trying, though, so I'd imagine there are products that are not as efficient as coffee, but are still loved and widespread due to their accessibility, among other factors. (advertisement, etc.)
What other products can come into the picture? What can substitute coffee as an energy source?
It doesn't have to be caffeinated, but it has to provide energy boost; also, I can image synthesizing caffeine is not impossible.