Well I just talked to my dad about this, who is a chemist. I was wrong about the concentration thing, you can concentrate it but only to a degree. As far as eating the powder, it is most likely something such as a sugar molecule attached to an ethanol. As ethanol is liquid at room temperature, breaking the sugar molecule from the ethanol releases the ethanol, and the way to do that is by dissolving the sugar molecule with the water. Eating the powder might work just because of natural body processes, though. There is more to it than that, but he used a lot of complicated terminology that would be foreign to us all and which I can't recall.