Yeah-- same here. I assumed it was some kind of product to circumvent a regulation re: sugar content in menu items.

He’s back making that exact product now

I personally think it's gross the idea of licking something then setting it aside to lick it again later without washing it, but maybe you do wash it. Also maybe way too salty.

FWIW, both sugar and salt are used as preservatives to inhibit microbial growth.

So, it might actually be pretty clean, from that perspective.