This research aims to get the best tapioca adhesive concentration in making charcoal briquet. This research was conducted experimentally using a complete randomized design method consisting of 5 treatments and 3 replications to get 15 experimental units. The treatments in this study were the ratio of acacia bark charcoal and tapioca adhesive as follows: P1 (97:3), P2 (96:4), P3 (95:5), P4 (…