The purpose of this research is to obtain the best combination of treatments between the soaking time of sodium metabisulfite (Na2S2O5) and the drying time of the physico-chemical of tofu pulp flour. This research was conducted with nine treatment combinations and three replications. The treatment used was L1P1 (15 minutes soaking, 3 hours drying), L1P2 (15 minutes soaking, 4 hours drying), L1P…