I was in Maine this past weekend and wandered into a store called "Skordo", https://skordo.com/collections/salts-peppers
They were a touch twee, but nonetheless delightful.
They had something I'd like to incorporate -- although I admit I didn't buy anything -- I was on the road and my suitcase space was already filled with Maine liquor) -- but anyway, they had this thing, dehydrated apple cider vinegar. I have never encountered it, but think it could be very interesting. They were so nice I'm inclined to order from them the next time I'm in need of stuff.
Anyway, just FYI. Skordo.
ETA: I hit up La Boite in March when I was hunting up pink nitrite. They were nice, too.