These are the edible chocolate LEGO blocks created by Akihiro Mizuuchi. They're made by pouring liquid chocolate into LEGO brick shaped molds and waiting for it to cool. Not too complicated. Afterwards, they're durable enough to build with, provided you don't hold them in your hand too long and melt the little nipples off. Nobody likes a melted nipple. Back me up, Ice Queen! "Please, it's like 100 degrees in here -- turn the AC on." Haha, no can do, Drippy Nips, that shit's expensive.
Keep going for several more shots including some chocolate LEGO bears.
Thanks to D-City, who may or may not be like Paradise City, but I'm not willing to take the chance to find out.