Anyone try the Afghanistan kangina method of storing grapes?

Just curious to see if anyone had done something like this. Google decided I should see this article, and it seems like a nifty cob lentil bowl is better than tupperware for keeping grapes fresh for 6 months?

https://www.atlasobscura.com/articles/how-did-people-store-fruit-before-fridges

I can't try it myself right now, but it seems interesting.

Looking at the pictures the grapes are not what we in the western world would call fresh, they are rather wrinkled after their stay in the bowls, but it would certainly be a change from raisins.

I'm just amazed that they look that good after five months. If I'd packed a bunch of fruit into a mud bowl and opened it later, I'd expect to see a slimy mess as it decomposed!
After doing an image search, I can see that it's really a common thing for that region, there are road side vendors with hand pulled carts piled high with these clay lentil packages.

I wonder if it's only something that can be done in that region, due to air quality, temperature, clay soils etc... or if we could pull that off elsewhere.
I'm not in a position to try right now or I surely would. But this rental has no cool storage, and I can't go modifying the yard.

I have this fun image in my head of a cellar stocked with these.

There is an ancient way to store grapes for, literally, years. Wish I knew it. So much that humanity has forgotten!

Here is a video of someone opening a kanjna container to show the grapes inside. It strikes me that each container holds a perfect serving size for sharing with a family or a small group of people.