Sunsi is a Chinese food product made from bamboo shoots that have undergone lactic acid fermentation. An alternative name for sunsi is sungan , although sungan may also refer to dried bamboo shoots that have not been fermented.

Sunsi are typically made using the winter shoots of the sweet bamboo (Dendrocalamus latiflorus), which is widely cultivated across southern China. The harvested bamboo shoots are soaked, boiled, fermented, shredded