Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Liliopsida
Order: Asparagales
Family: Alliaceae
Genus: Allium Species: A. cepa Binomial
name: Allium cepa

It is presumed that our predecessors discovered and started eating wild onions very early - long before farming or even writing was invented. Very likely, this humble vegetable was a staple in the prehistoric diet.

Most researchers agree that the onion has been cultivated for 5000 years or more. Since onions grew wild in various regions, they were probably consumed for thousands of years and domesticated simultaneously all over the world. Onions may be one of the earliest cultivated crops because they were less perishable than other foods of the time, were transportable, were easy to grow and could be grown in a variety of soils and climates. In addition, the onion was useful for sustaining human life. Onions prevented thirst and could be dried and preserved for later consumption when food might be scarce.

Onions are mentioned to have been eaten by the Israelites in the Bible. In Numbers 11:5, the children of Israel lament the meager desert diet enforced by the Exodus: "We remember the fish, which we did eat in Egypt freely, the cucumbers and the melons and the leeks and the onions and the garlic."

In India as early as the sixth century B.C., the famous medical treatise Charaka - Sanhita celebrates the onion as medicine - a diuretic, good for digestion, the heart, the eyes and the joints.

Dehydration of Onion    Application of fresh onion