The Hoz sent in a link to this Instructables by alinke detailing the build of a talking breathalyzer.
The main components are a Seeeduino and the Seeed Music Shield, Twig Alcohol Sensor, and Twig Serial LCD all available from Seeedstudio. The open source code and other details can be downloaded from The Talking Breathalyzer site.
For those not of the maker inclination, a fully assembled version is available for $199.99 from Seeedstudio.
Via the contact form.