I'm pretty conservative on this Jack but I've never heard of a cooked meal sending anyone into withdrawal, but that's not really the point for me tho
If I'm at a restaurant and I'm not sure about a dish I'll ask.
If I'm a guest at someones house I can usually tell if alcohol is in the meal....in the 2 times it's happened over 10 years, it's usually in a sauce or something - I'll just scrape the sauce off....probably leave a fair deal of the meal.
if it's all through the meal, I wouldn't eat it - not because I think I'd get drunk or anything, just personal preference
D