If you're on any kind of social media, you may have seen this mythical dessert popping up everywhere. Dubai chocolate.
It's milk chocolate, filled with pistachio cream. But what's really remarkable is how much it costs - about $25 for a standard-sized block.
There's the same excitement around Labubus, Ooshies, and even - if you were around in the 90s - the Beanie Baby craze.
So, is something going viral enough to make it worth something? And what makes some trends reach fever pitch... and others fizzle?
