Minced oyster meat was hydrolyzed using papain and bromelin at the concentrations of 0, 0.1, 0.3, 0.5 and 0.7 %. 0.7 % papain or 0.3 % bromelin yielded the highest soluble nitrogen in the hydrolyzates. The proximate composition of the oyster sauce prepared from 0.7 % papain or 0.3 % bromelin hydrolyzates appeared to be similar. The acceptability scores of the two prepared sauces were not significantly different. The preference scores of stirred fried Chinese watercrest with the prepared oyster sauce were higher than the sample with the commercial oyster sauce