Dehydrated Jack Daniels?

One of my colleagues always used to kid around about having packed dehydrated Jack Daniels for field work. And now someone has invented a powdered alcoholic beverage?  OK, based on what TPP knows about chemistry, you can separate the water and alcohol, but then you still have to carry the same weight to rehydrate it later, and alcohol doesn't dry out; gas, liquid, solid, but not a dry powder. Something doesn't make sense. This powdered alcohol is called Palcohol, and when first this made the news TPP figured the Onion was at it again. Crazy! Can someone explain this and direct us to the dry margaritas?