ABSTRACT The objective of this study was to obtain exact ratio of soursop fruit puree and red dragon fruit peel puree in making slice jam. This study used a completely randomized design (RAL) with five treatments and three replications, namely : SK1 (soursop fruit puree 90:10 red dragon fruit peel puree), SK2 (soursop fruit puree 80:20 red dragon fruit peel puree), SK3 (soursop fruit pureeā¦