Made the above for hubby yesterday... here are the steps.. heheheh, May's lazy way.
Ingredients
1. 1/2 yam (cubed)
2. 1 sweet potato (cubed)
3. A packet of coconut milk (250g, Heng Guan Brand)
4. A packet of crystal cubes (from NTUC)
5. Pandan leave (knotted)
6. 2 Tablespoons of Fructo-Oligisacchoride (use normal sugar if u don't have)
7. Half cup water
8. 1/2 teaspoon of salt
Method
1. Cook yam n sweet potato till soft.
2. In a different pot, cook the crystal cubes till sides are transparent.
3. Pour in whole pack of coconut milk n add half a cup of water
4. Throw in yam, sweet potato n crystal cubes
5. Stir while bringing to a boil.