This study was to determine optimal conditions for preparing Gangjung and Sanja. Texturometer and panel test were employed to evaluated products which were prepared under varying soaking time of glutinous rice. The results are found as follows; Examination of acceptibilities of products by the panel test showed that 48 hours of soaking was the most optimal. In acceptability ratings. the second went to 2 hours, the third 24 hours, the forth 120 hours, the fifth, 72 hours, and the sixth, 96 hours. However, there was no significant difference in acceptability among various products(P>0.05). The cohesiveness and the brittleness of the highest-grade products soaking in 48 hours showed 0.09$cm^{2}$, 1.25cm, respectively by texturometer. In therms of acceptability, the cohesiveness of high-grade products read between 0.06~0.7$cm^{2}$. The brittleness of products examined was in the range of between 0.36 and 1.41cm. No significant difference was found among products prepared under varying soaking time n cohesiveness and brittleness.