Why a Fluffernutter Feels Like Edible Glue
Marshmallow fluff and peanut butter create a mouthful that is both sticky and hard to move. Fluff contains sugar syrup that clings to surfaces, while peanut butter is a dense paste full of finely ground peanut particles and fat. Neither ingredient flows freely, and together they form a thick coating that spreads across the tongue and palate.
The sensation is less like your jaws actually sticking together than like your mouth’s moving parts being coated. Your tongue and cheeks have to push the mixture around, and each swallow has to gather it into a manageable mass. With so much food clinging to the surfaces involved, those movements can feel slow and effortful.
Why Water Helps
Saliva normally moistens food and helps bind it into a soft lump that can be swallowed. A very thick, sugary, fatty mixture can be difficult to thin and gather quickly, so a sip of water adds fluid and helps loosen the coating. It does not dissolve peanut butter outright; it makes the mouthful easier to move and wash away.
That contrast is the sandwich’s small sensory trick: two familiar spreads combine into a texture that resists the very motions meant to clear it. A drink of water restores the slippery, mobile feeling that the sticky mouthful temporarily overwhelms.
