Selected herbal fermentation broth with medicinal and edible properties, consisting of yam, Yizhi Ren, and Huangjing, with a professional testing report (report name: Liuye Yin); The fermentation broth is light in color and odorless, without changing the original color and taste of the tea drink. It is delicious and healthy, with the taste of milk tea and the efficacy of herbal tea~