This is a traditional Sri Lankan sweet

1 cup Rice flour
1 cup thick coconut milk
1/2 lb ground juggery/sugar
1/2 cup coconut water
1/2 teaspoon Baking soda
Salt to taste
Kenda kola

Mix rice flour with coconut water and leave covered for 4 hours. Add the coconut milk little by little and mix juggery, baking soda and salt to form a thick batter. Again leave covered for 2 hours.
Roll the kanda leaf to make a cup (gotta) and bind the two edges with a toothpick. Pour the thick batter in to the cup and steam until you can see a crack in the center.
Serve with grated coconut mixed with treacle.