What is "guaiwei"

Guaiwei is a seasoning mixture in Sichuan cuisine of China. Although it is popular in the Sichuan province, it is seldom used outside the region's cuisine, unlike yuxiang, another seasoning mixture of the region. The guaiwei seasoning exists in several forms but can be viewed as the combination of yuxiang and mala seasoning with a high proportion of sesame and sour ingredients.