A super refreshing, clean and sweet chestnut drink. Under 45 mins, you roughly smash up a bunch of water chestnuts, and let it all simmer in large pot of water. Some drink it just like that. Others like a touch of sweetness, and so melt in some crystal rock sugar for that. You can have it warm or chilled. In Traditional Chinese Medicine, it’s believed to reduce body heat, relieve indigestion, and help you breathe easily by clearing phlegm.