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Encyclopedia > Romaine lettuce
Romaine lettuce
Romaine lettuce

Romaine or Cos lettuce (often called simply Romaine or Cos) (Lactuca sativa L. var. longifolia) is a variety of lettuce which grows in a long head of sturdy leaves with a firm rib down the center. Unlike most lettuces, it is tolerant of heat. Image File history File linksMetadata Download high resolution version (2526x2136, 1251 KB) Beschreibung Romaine lettuce (Lactuca sativa var. ... Image File history File linksMetadata Download high resolution version (2526x2136, 1251 KB) Beschreibung Romaine lettuce (Lactuca sativa var. ... Binomial name Lactuca sativa L. Lettuce is a temperate annual or biennial plant most often grown as a leaf vegetable. ...


Origin and etymology

The name 'Cos' probably does not come from the island of Cos, but from the Arabic word for 'lettuce', خس (IPA /xus/). It apparently reached the West via Rome, as in Italian, it is called 'lattuga romana', and in French, 'laitue romaine', hence its other English name. (Davidson) Port of Kos Archaeological site Tree of Hippocrates Roman amphitheater Kos or Cos (36°51′N 27°14′E, Greek Κώς, Turkish: Ä°stanköy) is a Greek island in the Dodecanese group of islands, in the Aegean Sea, which it separates from the Gulf of Cos . ... Arabic (; , less formally, ) is the largest member of the Semitic branch of the Afro-Asiatic language family (classification: South Central Semitic) and is closely related to Hebrew and Aramaic. ... IPA may refer to: The International Phonetic Alphabet or India Pale Ale ... City motto: Senatus Populusque Romanus – SPQR (The Senate and the People of Rome) Founded 21 April 753 BC mythical, 1st millennium BC Region Latium Mayor Walter Veltroni (Left-Wing Democrats) Area  - City Proper  1285 km² Population  - City (2004)  - Metropolitan  - Density (city proper) 2,553,873 almost 4,300,000 1. ...


The thick ribs, especially on the older outer leaves, have a milky fluid which is unpleasant, so they should not be used. Neither should the leaf-tips because those can be bitter.

Romaine is the standard lettuce used in Caesar salad. Caesar salad is a traditional salad often prepared tableside. ...

Nutrition Information

One cup contains:

  • 1.3 g of carbohydrates
  • 0.4 g of fiber
  • 0.8 g of protein
  • 1,456 IU of vitamin A
  • 162 mg of potassium
  • 26 mg of phosphorous
  • 20 mg of calcium
  • 4 mg of magnesium
  • 0.62 mg of iron
  • 76 μg of folic acid
  • 8 kilocalories ("calories") = 33 kJ


  • Alan Davidson, The Oxford Companion to Food, s.v. lettuce. Oxford University Press 1999. ISBN 0192115790.
  • John D. Kirschmann & Lavon J. Dunne, Nutrition Almanac, s.v. ISBN 0-07-034906-1.
Look up romaine in Wiktionary, the free dictionary

  Results from FactBites:
Lettuce - Wikipedia, the free encyclopedia (862 words)
Lettuce is a temperate annual or biennial plant most often grown as a leaf vegetable.
Lettuce is used as a food plant by the larvae of some Lepidoptera - see list of Lepidoptera which feed on Lettuces.
The largest lettuce head was one that weighed 25 lb (11 kg), of the Salad Bowl variety, grown by Colin Bowcock of Willaston England in 1974.
Romaine Lettuce - Cos Lettuce - Cooking Tips and Techniques (858 words)
Romaine is the American term for this long leaved lettuce, also called cos or cos lettuce (mainly with British-speaking peoples) because it is said to have originated on the Greek island of Cos (Kos), off the coast of Turkey in the Aegean Sea (also the birthplace of the physician Hippocrates).
Romaine is a member of the daisy family Compositae which, although the second largest family of flowering plants, contributes only a few food plants (including also chicory, endive, escarole and dandelion).
It is a cultivar of the common lettuce (Lactuca sativa) and is distinguished by an elongated head; dark green, long, narrow, crisp, stiff leaves and a coarse texture, with a distinctive rib almost to the tip of the leaf.
  More results at FactBites »



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