I think the secret to Waffle House is the coffee doesn't sit too long--it is always pretty fresh and they do wash dishes a lot !
I don't know a thing about meth---interesting correlation.
On the cruise thru Europe last year that had a machine coffee that was available 24 hors a day. Since i drink a lot of coffee i used that machine a lot---it was always good and it tasted American.
You didn't have to pay to use it, just put a cup under the spout and push a button.
Some have heard this story--some have not---it is truth.
I am gonna keep out the how and why of being there for the sake of brevity.
I ended up one mornig about 6am walking off a crew boat out of Houma, Luzziana---back in the SWAMPS ---onto a drilling rig. This was 1967ish.
The guy in charge asked me if I wanted a cup of coffee---YES, well it was more a yes--PLEASE.
He made that coffee from a bucket dipped in the swamp, poured in a pan and and a hadful of Community dark roast. Kept me awake for two days.
Folks the water from that swamp had a green skim on top.
Blessings