Literally fat taken from the ass of a sheep. You can think of it as the kind of cherry on top of a sundae, but in this case the cherry is pure unadulterated fat, and the sundae is a hearty serving of plov (rice pilaf), the ubiquitous dish of Uzbekistan.
Since it’d be a little weird to just eat a piece of fat completely on its own, the chef was kind enough to give me a little piece of bread to try it with. The combo is actually really good! Uzbek bread is really hearty and chewy, but the fat itself is almost buttery, but still textured.