Abstract:Dandelion grapefruit yogurt was produced by fermentation，using dandelion juice，white granulated sugar，and grapefruit juice as the main additives.With the comprehensive score selected as the main evaluation index，the formulation of the dandelion grapefruit yogurt was optimized on the basis of a single factor experiment and a Box-Behnken response surface experimental design.The optimum formulation was determined as follows：20 g of grapefruit juice，8 g of dandelion juice，and 7 g of white granulated sugar.The dandelion grapefruit yogurt thus produced had an excellent taste and a unique flavor.