Babao Douchi, one of the specialties of Linyi City, Shandong Province, is a famous Douchi product invented and produced by the old-fashioned "Unique Zhai" sauce garden in this city. Because it is fermented with eight raw materials: black bean, eggplant, fresh ginger, almond, pepper, eggplant leaves, sesame oil and white wine, it is called "eight treasures". It is famous at home and abroad for its rich nutrition, mellow fragrance, refreshing taste and convenient eating.