Fruit jam is a semi-wet food processed product from a mixture of fruit juice and sugar. The purpose of this research was to evaluate the effect of ratio of pineapple and rosella petals on the jam quality. This research used a Completely Randomized Design experiment with five treatments and three replications. The treatments were NR1 (pineapple puree and rosella petal puree 90:10), NR2 (pineappl…