I've threatened to do it and the time has come. I decided to sacrifice one half of my 10 gallon batch for the greater good of brewing knowledge.
I for one, would love the idea of having some non-alcoholic beer on tap that tasted good and was reminiscent of a favorite clone recipe.
I followed the basic concept put forth by BYO and we shall see the results in a few weeks:
We start with 10 perfectly good gallons of an Anchor Steam style Ale. 5.5% aclkeehol. Flip a coin to see which "child" looses.
Siphon into my brew pot.....gently...
I can smell the goodness. It's not too late to turn back...
On to the fire it goes...striving for a 175-179 temp range. Alcohol boils at 173.3F
At 175, the "ghost" of the krausen is awakened. At this point, there is a strange whining and hissing from the bottom of the pot. Probably due to the evaporation of the alcohol under the pressure of the liquid. Or...could be the beer ghosts screaming in agony.
Held the beer at 179 for 30 minutes. There was a definite medicinal smell in the brewshop. I had a box fan blowing fresh air in...just to keep any concentraion of vaporized alcohol from accumulating.
After a 20 minute session with the worrt chiller (sanitized in a more traditional fashion), it's back into a keg for some time to mellow and chill.
I'll tap in a few weeks and compare to the non-neutered batch and report back.