I'm on an Eggnog Binge!
I have a suggestion that I just discovered yesterday. It's a place where you can buy egg nog to go, NOT a bar where you can drink it which seems to be what you're looking for. But I found the most incredible egg nog I've ever had. They make it and sell it by the quart ($10-11) at the Delightful Pastries original location on Lawrence. It's very very rich and thick and full of flecks of vanilla bean. The daughter (not sure if that's Dobra or Stasia) said they get special vanilla beans from Tahiti. As the daughter said, add some rum or brandy and enjoy. Or even have some straight. It's a lot like a creme anglaise with a slight kick to it. Yum!
My companion said the mild vanilla flavor might not be able to stand up well to added rum. And that might be true. This really is a lot like creme anglaise, with a strong vanilla flavor but without much of the tangy flavor characteristic of egg nog. So if this sounds good for you, now you know where to get it:
5927 West Lawrence
Chicago, IL 60630
(773) 545 - 7215
(I don't know whether or not they also carry it at their other locations in Lincoln Park and in the French Market downtown.)
5927 W Lawrence Ave, Chicago, IL
They have it at the shop on Wells - $14.95 for a quart and they said that you should order in advance if you want more than one at a time ... planning (having seen your recommendation) on picking some up tomorrow as a gift for friends along with some run I brought back from Santo Domingo ... which may overpower it but it will be fun to try!