I may buy a breathalyzer and try it again....:rockin:
That's the way to do it! If I had a breathalyzer, here's how I would do it:
Buy a six-pack of something ~6% ABV. For the control, I would document my breakfast/lunch/dinner and non-alcoholic drinks for the day. I would set an amount of time to drink each beer. Say, 30 minutes per beer. I'd try the breathalyzer at the 1.5 hour mark and again at 2.5 or 3 hours. Maybe again at 4 hours if I'm still awake.
I'd then try to duplicate the experiment as closely as possible, including meals and drinks during the day. Then, prior to drinking the three beers, I would try Jim's method of 1 tsp. of yeast per 12 ounce beer that I was planning to drink (mixed with yogurt). Repeat the measurements and see if there is any difference.
There would obviously be some other variables at play based on metabolism that are a little more difficult to control, but it would be nice to do the experiment in a mostly-controlled fashion.
Ideally, enough people would do the same experiment to get a statistically significant sample size, with half doing the control first and half doing the yeast first.
Dammit, I just realized that I let my inner engineer slip out....
