Special Savory Sauce is kind of a funny name for something you're getting on your nuggets. I mean, just say that to yourself for a moment "Special Savory Sauce on my nuggets". Sounds like a line from a dirty movie.
Hey, Burger King, does Dairy Quin know you gave special savory sauce to Wendy?
Anyway, It's Cane's Sauce with a little less flavor. Same basic mix but not as much pop. One the down side it's not as good, on the up side you can keep it longer.
Now go get some because it won't be here forever.