Their most lux marshmallow ever. The process starts off with brown sugar, giving the mallow the coziest foundation to build from. Dark rum comes into the mix late in the game, and it'll be the first flavor that hits you. Finally, they fold in real dang butter to the mixture, which means you're gonna end on the silkiest, most luxurious note you've ever experienced while eating a marshmallow. It's like falling back into a bed of pillows and silk sheets.