Hot Pot (part 2)

Each time I eat hot pot, I like it more. I've now had fish hot pot, tofu hot pot, hot pot with food-on-stick, and hot pot with innards. In some hot pot restaurants the food is ordered from a menu; in others it's selected from a display case. I usually prefer the latter.

Today I went to eat hot pot with my classmates. We went to a restaurant I've been meaning to try out for some time. We selected a wide assortment of vegetables to go in the boiling fire broth. Only a few pieces of meat were selected.

We ate and talked and enjoyed the spicy meal. At one point I noticed my classmate gaze at the far wall. I looked in the same direction following her line of sight. There it was: a giant rat crawling down a pipe.

What was that meat, anyways?