Guizhou's sour soup makes taste buds zing

Signature dish rapidly gaining in popularity at home and further afield

For many hotpot lovers, the iconic Chinese dish stirs up thoughts of a deep numbing spiciness. But for many in Southwest China's Guizhou province, hotpot is all about mouth-twisting sourness.

Sour soup hotpot has been gently gathering steam over the past few years, with knowledge and experience of the tangy broth spreading out from Guizhou helped in part by social media.