There were many tips as to what to eat and drink to soften the cough but I did this because these were the only ingredients I could find at home. Just too exhausted to have gone out shopping for pears or whatever these recipes call for.
Just wash and soak some white fungus, about 1 cup. They double in size after a few minutes in water. Get rid of any hard parts that doesn't soften up after 10 minutes or so of soaking. Drain.
Wash a handful of red dates. Get the stones out by flattening each date with the side of the cleaver.
Wash a tablespoon each of wolfberry (枸杞) and dried longan meat.
Boil 2 litre of water in a pot, add fungus and red dates. Simmer for about an hour. Add longan and wolfberry, cook for 2 minutes. Add rock sugar to taste. I add a small piece of gula melaka (palm sugar) to give it a richer aroma. Off heat.
Drink it warm or cold. Warm if you are in my condition but I really like it cold straight from the fridge on a hot afternoon. I don't think it did much to ease the cough but it did help lift my spirit.