Wash your ginger thoroughly, scrubbing the skin vigorously to remove any residual dirt.
Slice the ginger into 2-3 inch rounds. Using a mallet, pound the ginger pieces until they begin to release their juices. You should have roughly 2 cups of this pounded ginger.
Add the pounded ginger and any released juice to a large pot and cover with 10-12 cups of cold water. Place on the stove and allow to boil for approximately 30 minutes. Then turn the heat down to a medium heat and allow to simmer for another 30 minutes. If too much water evaporates during this process, feel free to add more, according to your taste preferences.
Pour the ginger tea through a fine mesh strainer to remove all ginger particles. Serve warm, with or without a sweetener such as palm sugar.