My all time favorite gum as a kid, in the 60s, was Adams Sour Orange gum. My mouth still waters just looking at the package.
Literally. I’m not kidding. It’s watering as I type this. Drool cup, over here!
Some of these gums have been reissued by Adams; sour cherry and sour apple are the only flavors available for now, though. Sour cherry was my other favorite, so I’ll be buying some of that from this site (which also says to call Cadbury Adams and request the other flavors, at 1-800-524-2854).
My jaws are already tingling, in anticipation of glorious chewing pleasure.