I was surprised to find Barq's Red Cream on tap and refillable at Pompeii Bakery in downtown Chicago. They have a few Chicagoland locations, some have waiters and some are fast food. The one I went to is on Dearborn. They have a website. Their pizza and salad is good. The Loop locations were only open 7 a.m. to 4 p.m. but I would think other locations might serve dinner.