Making compound jam as grapes and fresh roses was the main raw materials.The optimal formula of jam was determined as standard of sensory evaluation through single factor test and orthogonal test.The result was follows:the mass ratio of rose and grape was 8∶2.Based on the total quality of grapes and roses,the addi-tion amounts of white granulated sugar was 28%,the addition amounts of citric acid was 0.25%,the addition amounts of xanthan gum was 0.5%.Under this formula,compound jam has bright color,luster,moderate acid-ity and sweetness,delicate taste and easy to apply.
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