Kaili's sour soup: the fermented broth Guizhou builds a whole table around

In Kaili, the first thing a table gets is not a menu but a decision: which sour. A clay pot lands in the centre, the induction ring under it clicks on, and everything ordered afterwards — fish, tofu skin, wild greens, a plate of pork belly — is chosen for how it will behave in that broth. Guizhou builds its cooking on fermentation rather than heat, and suantang (酸汤), sour soup, is where the province makes its argument.

Red sour and white sour

Hongsuantang (红酸汤) is fermented from maolaguo (毛辣果), the small wild tomatoes that grow through Qiandongnan (黔东南), the Miao and Dong prefecture Kaili sits in. It arrives brick-orange and slightly thick, smelling closer to a cellar than a kitchen. Baisuan (白酸) is made from the cloudy water left after washing rice, kept in a jar until it turns sharp — paler, thinner, tasting less like something cooked than like something that happened.

Most restaurants keep both, and a table that cannot choose orders a divided pot. Regulars tend to have a position on this and will state it before you have sat down properly.

The sourness is not a flavour added at the end. It is the weeks the jar spent doing nothing in particular.

How the table is actually ordered

The anchor dish is suantang yu (酸汤鱼), sour soup fish: a river fish weighed in front of you, priced by weight, then lowered into the pot whole. What follows is volume rather than sequence — rice noodles, potato slices, a bundle of whatever green the kitchen bought that morning.

Then the dipping bowl. Zhanshui (蘸水) is not served finished; you build it from hulajiao (糊辣椒), chillies roasted dry and ground coarse, with coriander, garlic and a ladle of broth from your own pot to loosen it. Each person keeps their own, and nobody reaches into anyone else's.

点单前先选底：红酸还是白酸。

Getting there and taking it home

Kaili South station puts the city under an hour from Guiyang by high-speed train, close enough that the trip works as an overnight rather than a detour. The places worth eating in are usually small storefronts near a market, with plastic stools and the menu painted on the wall.

Supermarkets sell the soup base in sealed jars, sold by weight of paste rather than by brand recognition. It travels well, and it is the rare souvenir that still tastes like the place after a flight.