My Favorite Diet Soda in Ready to Eat Posted August 3, 2004 I recently found out that if you are getting your soda from a fountain that if you fill the cup most of the way with Diet Pepsi, but put in about an inch or so of regular Pepsi, it really cuts the artificially sweet taste. I love this. It's even better than regular Pepsi.It works with Coke too, but for some reason I think Pepsi is better for this trick.I guess that's the idea between those new C2 drinks, but I like mixing my own at the fountain. If you're having a stressful day, maybe you add a little more "real" soda to cheer yourself up. Or you could end up making the classic 12-year old girl's drink mixing a little bit of everything from the fountain - we called it a "suicide".