开口爽坛坛酸菜 (Kai Kou Shuang Jarred Pickled Vegetables) - Sayur Acar Balang Kai Kou Shuang

Kai Kou Shuang Tan Tan Suan Cai are pickled vegetables, likely with a sour and savory flavor. "Tan Tan" suggests a jarred or fermented style of pickling.