Ginger is commonly used as a cooking spice throughout the world. It is the rhizome of the perennial plant Zingiber officinale in the family Zingiberaceae. The ginger plant has a long history of cultivation, known to have originated in China and then spread to India, Southeast Asia, West Africa, and the Caribbean.

Chemistry

The pungent taste of ginger is due to nonvolatile phenylpropanoid-derived compounds, particularly gingerols and shogaols. The latter are formed from the former when ginger is dried or cooked. Zingerone is also produced from gingerols during this process, and it is less pungent and has a spicy-sweet aroma. McGee, Harold (2004). On Food and Cooking: The Science and Lore of the Kitchen (2nd ed.). New York: Scribner pp. 425-426. Ginger is also a minor chemical irritant, and because of this was used as a horse suppository by pre-World War I mounted regiments for figging.

Ginger has a sialagogue action, stimulating the production of saliva.

Culinary uses

Ginger is also made into candy and used as a flavoring for cookies, crackers and cake, and is the main flavor in ginger ale-- a sweet, carbonated, non-alcoholic beverage, as well as the similar, but somewhat spicier beverage ginger beer.

Fresh ginger should be peeled before using to cook. For storage, the ginger should be wrapped tightly in a towel and placed in a plastic bag, and can be stored in a refrigerator for about three weeks and up to three months if storing in a freezer.

Regional uses

In Western cuisine, ginger is traditionally restricted to sweet foods, such as ginger ale, gingerbread, ginger snaps, ginger cake and ginger biscuits. A ginger-flavored liqueur called Canton is produced in Jarnac, France. Green ginger wine is a ginger flavored wine produced in the United Kingdom, traditionally sold in a green glass bottle. Ginger is also used as a spice added to hot coffee and tea.

In Arabic, ginger is called Zanjabil and in some parts of the Middle East ginger powder is used as a spice for coffee.

In India, ginger is called Aadu in Gujarati, "Shunti" in Kannada language1, Allam in Telugu, Inji in Tamil and Malayalam, Alay in Marathi, "Aduwa" in Nepali, and Adrak in Hindi and Urdu. Fresh ginger is one of the main spices used for making pulse and lentil curries and other vegetable preparations. It is used fresh to spice tea especially in winter. Also, ginger powder is used in certain food preparations that are made particularly for expecting women and feeding mothers, the most popular one being Katlu which is a mixture of gum resin, ghee, nuts and sugar.