Nihonshu (popularly known as saké outside Japan) has been enjoying something of a revival recently.
This event, which has been held since 2014, takes place along the pedestrian-only Kanamono Dori near the South Exit of JR Kanda Station (the venue has moved from Kanda Myojin Shrine).
Update: In 2017, the Nihonshu Festival will not be held. It is expected to take place again in 2018.Organizers may cancel events, alter schedules, or change admission requirements without notice. Always check official sites before heading to an event.