'Bibingkang Malagkit' (with langka)

Bibingkang Malagkit = it is a Filipino traditional rice cake dessert made made of glutinous rice cooked with coconut milk and brown sugar and topped with sweet and creamy coconut topping....
Ingredients:
For topping:
2 cups thick coconut milk (kakang gata)
2 cups dark brown sugar
For bibingkang malagkit (biko type)
3 cups glutinous rice
4 cups coconut milk
1 cup water
1 1/2 cups light brown sugar
1 cup langka or jack fruit