This is what a typical jar of delicious almond butter looks like when what is left behind is too frustrating to remove for practical purposes. Throwing this glass jar in the garbage is a waste of resources, attempting to clean it, on the other hand, is a waste of time and water. Luckily, there are chipmunks in my backyard who are more than willing to clean jars like this while getting their nutrition. So the solution that makes everyone happy is to place the jar near a known chipmunk hang-out, which happens to be under the steps leading down from the deck.
Here is the same jar 6 days later.
It was almost sparkling clean except for a few bits of pine needles and a single "example" of what seems to be chipmunk poop.
The chipmunks are happy and the jar is now ready for the recycling bin.