Sourness is one of the five basic tastes, and also a key player in the flavors of Yunnan.

The people of Yunnan like to extract sourness from fruits, like the familiar lemon and lime, to more rare counterparts, such as sour papaya. The locals excel at realizing the value of sourness in these fruits, which are not quite palatable on their own, and use them to add the mouthwatering sharp and crisp sourness that is the signature of the dishes of Yunnan.

The second season of Flavorful Origins, another masterpiece by Chinese food documentary director Chen Xiaoqing, the creator of A Bite of China, will premiere today on Tencent.com.

The season, consisting of 10 episodes, will shine a spotlight on Southwest China's Yunnan province, a region blessed with abundant sunlight, fresh produce and exotic spices.