In Jacksonville for a few days. I combed threads and found many microbreweries but looking for a catchall establishment or two where I can sample many breweries from the region?
As the others have already stated, Kickbacks is a fantastic place for brews local & otherwise. If you happen to have time to stop at two breweries in Jax, stop at Aardwolf, go have dinner somewhere nice in the San Marco area, then go back to Aardwolf again. They're pumping out some great brews at that place.
