I've been going to Cassell's in K-town off and on for quite a few years, and lately it has seemed to go downhill for me. I think they changed owners in the last couple years, so that may have a lot to do with it.
Their burgers haven't excited me for a while now, but I always went more for the creamy potato salad laced with horseradish than for the burgers. Today though, I went and the potato salad had a very off-tasting quality to it. I couldn't finish it for the first time ever.
I think I need to assign this place to the bench for a time.