Alcohol does not burn out completely, that is the key. I would also consider that there are some people that object to alcohol on moral basis alone. If I am cooking for a group, especially if there are people I do not know well, I avoid hidden ingredients such as alcohol, peanut and peanut products, shellfish products and MSG.
I'm feeling bearish, and I'm packing a Wusthof Grand Brisket slicer from MABA
"perhaps...but then again...maybe not..."