Salt Zombis
As everybody knows (for given values of ‘everybody’): if you’re facing a Caribbean Voudon-style zombi, and you give it salt, the taste of it suddenly reminds the zombi that it’s dead (or drugged, or possessed, or whatever the cultural meme is this week*). And that shuts the zombi down. Which is great! Wonderful! Well done, ye fearless counter-occult specialists.
Only, what happens to the salt afterward?