It's all I drink. It's a good exercise in staying prepared, cause if I run out it takes over 18 hours until my next batch is ready.
Max course grind, 284g of cheap dark roast beans, soak for 18+ hours. A little cream and simple syrup. Delicious. Makes enough concentrate to last about 3 days between my wife and I.
I really like the cold brew setups that have a drain hole at the bottom. I use a reusable cotton bag that makes filtering and cleanup a bit easier.
I do 10 or 12 ounces of coffee (a whole regular bag or a quarter of the big bag) into about a liter of water and let it sit for 18-36 hours. I dilute it with about three parts water, my partner drinks it about half and half with creamer.