The root of the licorice plant has a long history of use. It is called gan cao in Traditional Chinese Medicine. According to legend,
the ancient Greek physician Dioscorides advised the military troops of Alexander
the Great to chew licorice root. In Medieval Europe, licorice root was so much in demand
to mask odors associated with poor sanitation and the taste of spoiled food that
its import was heavily taxed in order to provide funds to repair London Bridge.
Today, powdered licorice root is used as a foaming agent in fire extinguishers and as
a flavor additive to candies, baked goods, teas and home brewed beers.