I remember reading this a while ago. Honestly if you're THAT desperate for a beer on a backcountry hike just pack some in, beer is water, or if you just wanna drink do the smart thing and pack in a BPA-free container full of rum, vodka, whiskey etc.(or a couple plastic pints, if you're feelin classy. Small, lightweight, easy to find places to stash them in your pack). Then you have a multi-purpose beverage e.g. sterilizing wounds/first aid supplies in an emergency. It seems like it would be even more of a PITA to pack in that weird little bottle, cups or glasses, and the concentrate. Or just drink the syrup I guess, though it'd probably be pretty vile either way. Can't say I've had cold water on anything more than a day hike or camping trip which involves less hiking and more sittin around a fire gettin tanked.