Don't throw away lettuce, greens, celery, etc that has been in your refrigerator a little too long and gone limp. Revive most leafy vegetables by cutting a small amount from the stem-end, soaking in warm (100 degree) water for 5 minutes, drain and refrige
Modern lettuce had its start as a Mediterranean weed. As early as 55 B.C., lettuce was served on the tables of Persian kings and praised for its medicinal values.
The name lettuce comes from Latin words referring to its milky juice.
Christopher Columbus introduced lettuce to the New World.