Boil the red beans in 5 cups of water
until the beans expand. Put in ginger, screw pine leaf and salt. Add
in palm sugar and sugar. Stir until the sugar dissolves. Pour in thin
coconut milk and bring to boil. Add the sago and thick coconut milk.
Keep on stirring. Remove the screw pine when the sago becomes
transparent and shiny. Serve hot or chill in serving bowls.