THE folks at Heverlee have struck marketing gold with this outdoor pop-up concept that has been enchanting the Merchant City for the last two weeks.

Hidden down a previously-private lane off Bell Street, the limited-time-only bar came courtesy of the team behind The Fish Plaice, the incredibly popular seafood restaurant that introduced hipsters to the Saltmarket’s less-than-glamorous back lanes during last year’s heady Commonwealth summer.

It was only open for a fortnight, but during that time Tontine Lane was the coolest passageway in all of Glasgow.

Lifestyle and food bloggers trampled over each other to get in, then faced an agonising decision over which Instagram filter to use on their photos of Douglas Gordon’s Turner Prize-winning Empire sign.

The promise of refined Belgian bistro scran and hand-selected beers sent foodies into overdrive.

Leuven’s Wim Dejonghe – one of Belgium’s most exciting young chefs – curated the Low Countries-inspired menu, which of course featured much more than just waffles and sprouts.

Moules et frites, the Belgian national dish, and other seafood-centric delights such as lobster mac and cheese went down beautifully, while a six-course tasting menu developed for Belgium’s national day – all steak tartare, monk cheeks and pearl barley risotto – was hailed as “fantastic” by the VIPs in attendance.

Sadly, the bar’s gone now and it isn’t coming back.

That’s causing a fair amount of anguish among the city’s cool kids, who now need to find the next similarly trendy space to move onto.

But the upshot is that after Tontine’s stunning success, beer companies will be clamouring to turn every grubby lane in the city into a bustling, branded venue bursting with bloggers and minor celebs.

For me and my Instagram-happy, Prosecco-swilling peers, it can’t come quick enough.

l This week we asked: What’s your favourite pop-up bar or restaurant?