Rinse the red dates, longans with clean water before using.
Soak the dried snow fungus in warm water until soft and plump. Discard water and use scissors to cut snow fungus into smaller piecesand then trim off the yellowish crusty part at the bottom. Discard those.
Place the snow fungus, red dates and longans in a large pot.
Add water and bring to a boil and then lower the heat to let it gently simmer for the next 20 mins. Cover with lid leaving a gap.
After 20mins, add gingko nuts and continue simmering for 10mins.
Everything should be softened. If not, let it simmer a bit longer.
Add rock sugar and stir until melt.
Taste for sweetness, add more if preferred
Then add goji berries and cook for another 5 mins and then turn off the heat.
This dessert can be served warm or chilled.