Soak the snow fungus in water till it becomes soft, about 20 minutes Snip off and discard the yellow hard part on the under side of the snow fungus. Cut up the snow fungus into very tiny parts.

In a pot, bring the water to a boil, add in the knotted pandan leaves and snow fungus. Let it boil at medium heat for about 30 minutes till the fungus becomes soft.

Add in the sweet potato cubes, let it simmer till cooked about 20 minutes.

Add rock sugar to taste, stir through till sugar is dissolved. Discard pandan leaves.

Serve warm or chilled.

recipe adapted from No-Frills Recipes with slight adjustments