Originally Posted by ILuvParis
Diet Coke is the nectar of the gods. Nothing better than an icey cold can. However, if it is more than a month or so beyond the date stamped on the bottom of the can, it can be REALLY bad. I have dumped entire cases down the drain.
that's the artificial sweetener breaking down over time (Ace-K and Aspartame)... quite bitter after it loses its sweetening properties.