Knead the flour with salt and water till a soft dough is obtained. Allow to rest for ten minutes.
Mix the ingredients for the filling and set aside.
If using banana leaves for wrapping, wash it well and run it lightly over flame till it changes color. This is to avoid it from breaking. Cut into square shapes and set aside.
Divide the dough into 8-10 balls.
Rub oil on hand and flatten the ball as thin as possible on a leaf. Put a spoonful of filling and close tight.
Repeat for the remaining dough and filling.
Heat water in a steamer. Keep the prepared adas in the steaming vessel and allow it to steam for 10 minutes. It is ready when the leaf peels off easily.
Take off and allow to cool. Serve for chai time!
Notes
If you don't have banana leaf, you can use aluminuim foil to wrap. Another way to do is to keep one banana leaf on the steaming plate, line up the adas and then top with one more, and then steam.