The December contract was sharply higher on the forward cottonseeds oilcake market on Saturday in the process of trading, dealers said. The December vaida closed at Rs 1309.90 and the next day it opened with a gain of 40 to Rs 1310.30 in the early session, dealers said. The January vaida closed at Rs 1452.50 and it commenced with no change in the morning session, they added.