After the advice of everyone's posts I decided to boil off the carbonation and the alcohol. Since I have issue with being patient, I'd rather start the process being safer than sorry.
Beer actually 'indicates' pretty well. The carbonation boiled off and then the alcohol started to boil off. I could tell right away that the alcohol was disappearing because the bubbles of the alcohol, which were tiny and white, started to be replaced with large darker bubbles, which was obviously the beer boiling. It is quite a process but I'd rather not witness the infamous lye volcano first hand. I did, however, learn that pouring luke warm beer into an already hot sauce pan was not the smartest thing to do. I never been accused of being the brightest crayon in the box though.
I used a nice dark stout and now the house smells like yeast, molasses, sugar, and malt. It's like a Canadian heaven. Now I have to explain to my friends and family how I could beer for anything other than drinking.