Ok, call me old school.
I have a 24 cup coffee boiler. Looks a lot like a coffee pot. You see 'em in old western movies, sitting by the campfire. Odd thing about that, you always saw 'em by the campfire, but you never saw anyone packing one around. Maybe they just left one at every fire ring.
It's not a percolator or a french press or defibrilator or anything that high tech.
It's a big pot, narrows at the top. Has spout on one side a handle on the other and a bail that sometimes has a spring insulator in the middle of that. Has a lid with a little handle on it.
Works like this:
1) fill 2/3s full of fresh crick water.
2) put three big handfuls of coffee grounds in.
3) set on a rock next to the campfire with 1/3 to 1/2 of the bottom of the pot exposed to the flames. Will also work on a camp stove.
4) when it boils take it off the fire and pour 1 cup cold water down the spout and through the lid, let it set for a minute.
5) pour coffee.
Notes:
1) don't dump the grounds when you get low, just add another handful and more water.
2) some folks add eggshells to the mix I never did and couldn't tell a difference when I had coffee made with 'em.
3) you can add non-nutritive sweetener to the coffee if you like, I prefer the Jack Daniels Old Number 7 brand.
3) don't wash the inside, just rinse it out, the residue adds character.
4) don't wash the outside, carbon build up helps heat transfer.
5) get a canvas bag to pack it in to keep all the carbon off everything else.
6) whenever there's a visitor to camp, offer 'em a cup of coffee and some of that sonofabitch stew in the stewpot.
) in da mornin'
