Known as the "Pearl of the Plateau", Erhai Lake in Dali is not only beautiful in scenery, but also rich in fish species resources. Bai people have loved to eat fish since ancient times. Their eating methods and cooking skills are very unique, and hot and sour fish is one of them. The production method of hot and sour fish is: remove gills and viscera from live fish, boil the oil in the pot, put the fish in a hot pot, add water, add onion, ginger, dried Chili noodles and salt, drop a proper amount of sour vinegar, add tender tofu, then boil it with strong fire, and then cook it slowly with slow fire. Hot and sour fish is characterized by heavy seasoning, thick and salty fish soup, hot and sour mouth without fishy smell and fresh and sweet aftertaste. It is a delicious dish for Bai people to entertain guests.