So, it's some sort-of beer with grain alcohol added to it.
Seems like one might have a drinking problem if one found this that compelling.
How do you make it cold?
It's not like there are no opportunities to buy beer when touring (or so I've heard). I bet it's expensive too.
It makes a tiny bit more sense for backpacking. But it's extra weight.
A solution looking for a problem.
Bizarre.