This was a few years ago in de Wildeman in Amsterdam (my favourite pub in the world). It’s a Bierproeflokaal, literally beer tasting room, and I saw people drinking something clearly dredged up from the Damrak.
So, the whole point of the place being to try something new, I asked some questions (the bar staff are very knowledgeable and love to talk about beer) and found it’s a New England IPA. NEIPA is heavily dry hopped to give a hazy appearance but Garage (Barcelona) took it to the extreme with Soup.
It hasn’t got bits in it like a gone off beer has, it’s like any other heavily hopped craft ale in most respects apart from the opaqueness. If there is a NEIPA on offer I will always give it a go. Most look more like Thatcher’s Haze than Soup and if you like the hoppy citra style are usually very good. Most British craft brewers have one these days.