I don't know if any of you are old enough to appreciate this. There used to be a TV commercial for coffee featuring Juan Valdez, a fictional character supposedly a coffee plantation owner boasting about not picking a single bean before it's time.
Amazingly enough when I was in college (68-72), I met Juan Valdez. At least I made the acquaintance of an exchange student from Columbia whose father owned a coffee "plantation". Every couple or three months daddy would send him a care package of a couple of pounds of coffee from his "plantation" he wouldn't have to defile his palate with "American coffee".
I cannot convey to you how amazing his coffee was compared to common fare. It was almost defamatory to mix water with his beans.
Through him I learned a lot about coffee production. Almost all instant coffee comes from Brazil or central Africa. Essentially low lying, red clay huge farms. At some point when the grower determines it proper the entire field is harvested like a field of wheat or corn. A huge mechanical harvester mows down everything in its path. Ripe, raw, or rotten. It's all ground up and processed together. Incidentally these are huge field similar to cotton, wheat or corn--hundreds of acres.
According to my friend, coffee is best grown at altitude in volcanic (mountainous) soil. His father's plantation consisted of a few acres. At harvest time, instead of mass harvesting, they would pick each bean, one at a time once it was ripe.
Ironically Georgia would have been ideal to farm coffee, at least the instant variety. Something tells me that the common soldier on either side would have been grateful for such "inferior" coffee.
PS: While we're talking about food/eating. I assume you've all heard about hardtack. I remember at least 50 years ago coming across a recipe for hardtack. Given that it might well have been stored for a decade or more, the name was appropriate. Once recipe called for taking each biscuit one at a time and pounding it with a rifle butt. Once reduce to powder, the cook could pick out the weavils one at a time and boil the rest into a paste. Alternatly the cook could simply dump the biscuit in the water and boil it and get the added benefit of additional protein from boiled weavil.