It has the potential to be a boring Britpop love-in, the kind often witnessed at establishments with a similar clientele, but the transcendental quality of the playlist and the fact that the joint is packed to its capacity means it's nothing of the sort.
Last time we visited this dark and sprawling Sauchiehall Street basement The View were entertaining star-struck teenage indie boys with an artfully shambolic DJ set.
This was early last year, when guitar-based lad rock was entering its death throes having ruled the charts for years and pushed sales of skinny jeans and trenchcoats to never before witnessed levels.
Now the genre is almost nowhere to be seen, with the aforementioned Dundonian scamps' latest album sinking without trace in a world that has moved on to more cerebral fare.
Just like fashion, musical trends are cyclical.
The music that Firewater revels in has deep roots and a fanatical following which means that, a bit like hardcore, indie will never die – it's just resting, waiting on the next wave of angsty suburban youth with a knack for a great chorus.
There is room for both here, but you get the impression that Firewater's clientele are happiest when shimmying to the likes of The Smiths, New Order, Blur and Pulp: classic staples of the indie disco's halcyon days.