"There's a web-like structure in the middle of the kidney. We Da Xia People call it the 'yao sao'—the source of its foul taste. It's the key structure for processing waste, and thus the part with the strongest odor."
"As long as you cut it out, the rest won't have any unpleasant odor."
As he spoke, his blade sliced horizontally, paring off a thin layer of the kidney composed almost entirely of the web-like tissue.
With another slice, he cleanly removed the remaining traces, then did the same to the other half of the kidney.
The heart, however, didn't require much preparation. It's one of the safest internal organs in an animal, with only blood passing through it.
Just squeeze it a few times by hand, letting the current flush out the inside, and that's all the cleaning it needs.
