Start with a bounded place and purpose: for example, independent bottle shops reachable by public transport, or bars with a documented alcohol-free list. Define the inclusion rule before gathering candidates.
Minimum evidence
Verify the official address, current opening hours, booking or walk-in policy, accessibility information, age restrictions, contact route, and the specific feature that qualifies the venue. Record when each fact was checked. Separate direct venue claims from observations and third-party reviews.
The finished guide should explain why a place is included, what may change, and how corrections can be submitted. Without that maintenance plan, a local list becomes stale faster than it becomes useful.