Sour and spicy are the flavors in my part of the world. Here's a sour fish hotpot we had a few weeks ago, the local specialty. it works like this: you go to a fish tank in the restaurant and select your fish. The butcher nets it, then chops it up in front of you and stuffs it in a metal bowl filled with odds and ends in a tomato-and-vinegar based broth. The bowl is brought to your table and set on a hotplate, where it cooks for about 8 minutes. At this point, it is ready to go. The flavor is a bit like Thai tom yam, if you're familiar with that. Not bad.