according to one website, this is how you make powdered alcohol...

The powder contains approximately 30% alcohol by dry weight, and is said to maintain a high degree of the original flavor of the alcohol solution. It is available in such flavors as brandy, rum, whiskey, red wine, white win, and vodka. -- According to the manufacturer, the powder is produced in the following way.

A solution of water and alcohol is mixed with maltodextrin and then spray-dried at relatively low temperatures. Each molecule of alcohol is encapsulated by dextrin during the spray-drying process and the smaller water molecules are allowed to pass through the surface and evaporate. There is about a 5% loss of alcohol on the surface of each droplet.

http://outhouserag.typepad.com/outhouserag/2005/08/powdered_alcoho.html

 

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