What it is
Organized by a federation of groups devoted to "town revitalization through regional comfort food," this event brings together local specialties from member groups across Japan. It isn't tied to one fixed city — the host location is said to move around the country from one edition to the next. It's also known for its voting system, where visitors cast a vote after trying the food.
Tips for enjoying it
Many groups sell their dish in small, easy-to-share portions, making it simple to try several. Some popular groups draw long lines, so arriving right when the gates open is said to help avoid the busiest stretch. The venue and transportation options change a lot depending on where it's held, so it's worth checking access information before you go.
When to visit
The timing and host city change year to year, and the event is said not to be held every single year. The organizing federation's official website is said to post the latest schedule, so that's the place to check if you want to attend.
Exhibiting groups are community revitalization organizations from around Japan that belong to a federation called Ai-B League, and joining is said to involve a screening process. Booths often display panels introducing each dish and the region's tourism information, so the event is said to double as a way to learn about the host area, not just eat. Many dish names are unfamiliar to first-time visitors, and many are said to enjoy reading the panels while deciding what to try. At larger events, exhibits can be spread across multiple zones, so checking a venue map beforehand is said to make it easier to get around.