I first ordered these bags to make cold-brew coffee concentrate in bulk when catering an outdoor, off-grid event, but after reading reviews and testing it out discovered they're just as great for making big batches of hot coffee as well. I boiled a gallon of water, put the right amount of coffee into the bag, tied it off, then let it steep like a giant tea bag (but full of coffee grounds, obviously) for 5-10 minutes.
Which I wouldn't say that was the best coffee I've ever had in my life (though it was as good as any I've had from a drip coffee maker), it's an incredibly convenient way to make big batches of coffee when electricity isn't available (most stovetop/campfire percolators max out at 64 ounces and take a while to perk). I also attached the long string that holds the bag shut to the rim of the pot with a binder clip, as the grounds tended to come out of the top when I let the bag lie flat on the bottom.
The only slight inconvenience was squeezing the water out of the grounds to get the strongest brew. When making cold brew this is simple- squeeze the bag with clean hands and you're set. For hot brew I ended up using a couple of metal pancake turners to squeeze out the hot water when removing it from the pot. Still, it's a relatively small annoyance for making BIG batches of coffee for groups.
As a bonus- the disposable nature of the bags meant I could pre-fill a few dozen bags and then drop them in a gallon of boiling water in the morning. When making my first cup of morning coffee over an open flame, in cold weather, before the sun has even started to come up- anything that simplifies the task is helpful. These are a cost-effective, low-fuss, low-effort solution and I'll definitely buy them again in the future.
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