Other ingredients may include allspice, birch bark, coriander, juniper, ginger, wintergreen, hops, burdock root, dandelion root, spikenard, pipsissewa, guaiacum, spicewood, yellow dock, honey, clover, cinnamon prickly ash bark, yucca, quillaja and dog grass.
Due to the wide variety of ingredients possible the flavor of root beer is widely variable between brands. This is especially true of local brands.
Root beer was a traditional beverage and herbal medicine. The beverage was often alcoholic, usually around 2%. As a medicine it was used for cough, and mouth sores. Commercially prepared root beer was developed by Charles Elmer Hires on May 16, 1866. He presented root tea powder at the 1876 Philadelphia Centennial exhibition. In 1893 he began selling bottled carbonated root beer.
Home-made root beer is made using concentrate to which is added sugar, water and yeast. It is allowed to ferment under pressure to retain the carbonation and limit the alcohol produce by the yeast to very low levels.
Root beer brands include:
Root beer is also used as a flavoring for candy, cough drops, popcorn, ice cream floats, cakes and breads.