Can Anyone Help Me Identify This Pickle?

What’s the brown pickle the arrow’s pointing to? I sure don’t know.

I encountered this lovely pickle plate in Brooklyn at a former-Soviet restaurant from the Caucasus. It includes two types of plum, two types of cabbage, pepperoncini, green tomatoes, and cukes. But what’s the brown-skinned thing with darker brown spots and a prominent, woody stem spot at the top. Anyone know?

A better picture of the thing follows.

Click on image for a better view.

Thanks, in advance, for your assistance.