Taste some straight up salt, then taste it again.
SURELY you can't be tasting JUST salt?
It may be salty, but salt is a pretty common ingredient in a lot of rubs, not only just salt, but sometimes also garlic salt, onion salt, celery salt, etc.
The salt does magical things with the protein to create some amazing bark.
18.5", 22.5" OTS
Large BGE (chambersuac's)
The Fiery Furnace (chambersuac's)
Big JT's Smokin' BBQ Competition Team