Soaked Glutinous Rice for an hour or you can just wash and rinse the glutinous rice 4 times using a strainer and place in a bowl.
Add lye solution and salt and mix it thoroughly. In a big saucepan pour 3 cups of water and bring to a boil, then add the glutinous rice mixture.
Transfer the gas mark to low heat and stir continuously for about 20 minutes.
Transfer under cooked suman on a platter and scatter evenly to cool down faster.
Meanwhile, in a saucepan combine the coconut milk and brown sugar over low heat and stir occasionally until mixture becomes thick and syrupy.
Turn off the heat and let the syrup cools down at room temperature.
Brush wilted banana leaf with oil lightly to avoid suman mixture from sticking.
Place a desired portion of sticky rice onto the banana on a greased side, cover, roll and fold both ends towards the center and tightly secure it with a string if using one. Or you can wrap the way you want either rectangular, triangle or square, using your signature wrapping skills.
This recipe can yield a dozen of suman. Suman needs to be wrapped tightly to avoid leakage when steaming.