[Wikipedia] Europe, Asia, Africa Native; Culinary Use: It is native to Europe, western Asia and north Africa, where it is eaten as a leaf vegetable.Cornsalad was originally foraged by European peasants. Jean-Baptiste de La Quintinie, royal gardener of King Louis XIV, introduced it to kitchen gardening.[10] It has been eaten in Britain for centuries and appears in John Gerard's Herbal of 1597.[11] It was grown commercially in London from the late 18th or early 19th century and appeared on markets as a winter vegetable, but it only became available in modern supermarkets there in the 1980s.[12] American president Thomas Jefferson cultivated māche at his home, Monticello, in Virginia in the early 1800s.[9] Like other formerly foraged greens, cornsalad has many nutrients, including three times as much vitamin C as lettuce, beta-carotene, B6, iron, and potassium. It is best if gathered before flowers appear. (link added by Mary Ann Machi)