SF on Tap is a beautiful, witty, and engaging tour around one of San Francisco's most popular and interesting neighborhoods (they also do South of Market and The Haight on weekends, both also highly recommended). The beers are crisp, cold, and perfectly paced and explained. The tour guides have a clear love for beer and a deep knowledge of the subject. They keep it approachable for the uninitiated but their understanding is vast and even the experienced could learn a thing or two from them. Beyond the beer, the tour is also surprisingly insightful and non-beer lovers will feel right at home on this tour. I cannot recommend SF on Tap enough. Whether you are a native or entirely new to the city, these tours have something for everyone. Cheers!