This underground beer bar near Fenway is cash-only and has a casual vibe. But with more than 150 bottles and 17 rotating drafts, the beer list is anything but lower-level. New England craft beers like Jack’s Abby, Fiddlehead, and Notch are represented. Curious tasters can try interesting selections like Flemish sours, and beer enthusiasts will be keen on the rare bottle list. If you can make the commitment, try all the available beers within six months and get a free mug. Just be sure to enjoy tacos and tots from the menu during your journey.