The quality of the beer at Karben4 is obviously going to be subjective. We tried three different beers and liked two of them. They're all $5 a pint. The food, on the other hand, is by Underground Food Coop, and it's amazing. I've been mourning the loss of Underground Kitchen since the fire (Forequarter is good, but it's a different genre than Kitchen was), and the small menu at Karben4 is the closest I've seen to the "late night" snacking that existed at Kitchen.
The deviled eggs and summer sausage sandwich were both great, but the pulled pork sandwich was ridiculous. Comparable to famous BBQ places in the South, even. It's a solid 1/2 pound sandwich, so you'll probably need to pass out for a couple hours after eating one, but it's worth it. We'll be going back for sure even though it's out of the way from downtown.