Language or humor that is down-to-earth:
— The saltiness of their language was inappropriate.
— Self-parody and saltiness riddled their core genre.

synonym: coarseness.

Roget 392a: saltiness.    niter, saltpeter, brine.   

The taste experience when common salt is taken into the mouth.

synonyms: salinity, salt.

Polish: słoność

The property of containing salt (as a compound or in solution).