How long does Mr Gulaman set?about 10 minutesAllow the mixture to harden at room temperature, about 10 minutes. You can also place the hardened gulaman into the refrigerator if you'd like, but once set, it will not melt at room temperature. Mr. Gulaman Unflavored BLACK ( 1 BOX - 10 sachets / 25 grams each ) A powdered base jelly made from finest seaweed extract.