This research aimed to get the best concentration in manufacturing pumpkin jam (Cucurbitamoschata Durch). The testing method was randomized design with 5 treatments and 3 multiplications. The treatment in this research were A1 (pectin 0.5% and 99.5% pumpkin porridge), A2 (pectin 0.75% and 99.25% pumpkin porridge), A3 (pectin 1% and 99% pumpkin porridge), A4 (pectin 1.25% and 98,75% pumpkin porr…