The objective of this reseacrh was to determine the effect of pre-treatment on the natural flavoring characteristics of oyster mushrooms. This study used a nonfactorial completely randomized design with one treatment factor, namely the type of pre-treatment browning reaction inhibitor, with five treatment levels:A1(control), A2 (blanching at 70°C for 5 minutes), A3 (soaking in 0.5% citric acid…