Laver (seaweed)
| Porphyra umbilicalis | |
|---|---|
 |
|
| Porphyra yezoensis | |
| Scientific classification | |
| Domain: | Eukaryota |
| (unranked): | Archaeplastida |
| Phylum: | Rhodophyta |
| Class: | Rhodophyceae |
| Order: | Bangiales |
| Family: | Bangiaceae |
| Genus: | Porphyra |
| Species: | P. umbilicalis |
| Binomial name | |
| Porphyra umbilicalis (L.) Kützing |
|
Laver is a littoral alga (seaweed) is edible and has a high content of dietary minerals, particularly iodine and iron. Laver is widely consumed in East Asia where it is known as gim in Korea and nori in Japan. In Wales, laver is used for making laverbread, a traditional Welsh dish. Laver as food is also commonly found around the west coast of Britain and east coast of Ireland along the Irish Sea.
It is smooth in texture and forms delicate sheetlike thalli, often clinging to rocks. The principal variety is purple laver (Porphyra umbilicalis).[1] Purple laver is classified as a red alga, tends to be a brownish colour, but boils down to a dark green pulp when prepared. It is unusual amongst seaweeds because the fronds are only one cell thick.[2][3] The high iodine content gives the seaweed a distinctive flavour in common with olives and oysters.[4]
Ulva lactuca, a green alga also known as sea lettuce, is occasionally eaten as green laver, which is regarded as inferior to the purple laver.[5]
Laver is sometimes also known as "slake".[6]
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[edit] Cultivation
Laver cultivation as food is thought to be very ancient, though the first mention was in Camden's Britannia in the early 17th century.[7] It is plucked from the rocks and given a preliminary rinse in clear water. The collected laver is repeatedly washed to remove sand and boiled for hours until it becomes a stiff green mush.[8] In this state the laver can be preserved for about a week. Typically during the 18th century the mush was packed into a crock and sold as "potted laver".
Cultivation of laver is typically associated with Wales, and laver is still gathered off the Pembrokeshire and Carmarthenshire coasts,[9] although similar farming methods are used in west coast of Scotland.
Laver can be eaten cold as a salad with lamb or mutton. A simple preparation is to heat the laver and to add butter and the juice of a lemon or Seville orange. Laver can be heated and served with boiled bacon. It is used to make the Welsh dish known as laverbread.
[edit] Laverbread
Laverbread (Welsh: Bara Lafwr or Bara Lawr) is a traditional Welsh delicacy made from laver. To make laverbread, the seaweed is boiled for several hours then minced or pureed. The gelatinous paste that results can then be sold as it is, or rolled in oatmeal; it is generally coated with oatmeal prior to frying.
Laverbread is traditionally eaten fried with bacon and cockles for breakfast. It can also be used to make a sauce to accompany lamb, crab, monkfish, etc., and to make laver soup (Welsh: Cawl Lafwr).[10] Richard Burton has been attributed as describing laverbread as "Welshman's caviar".[11]
Laver is often associated with Penclawdd and its cockles, being used traditionally in the Welsh diet and is still eaten widely across Wales in the form of laverbread. In addition to Wales, laverbread is eaten across the Bristol Channel in North Devon, especially around the Exmoor coast around Lynmouth and Combe Martin.
Laver is highly nutritious because of its high proportions of protein, iron, and especially iodine. It also contains high levels of vitamins B2, A, D and C.
[edit] See also
- Edible seaweed
- Nori - a similar tasting Porphyra common in Japanese cuisine
- Gim - similar style food in Korean cuisine
- Aonori
- Dilisk - another edible seaweed.
- Kombu
[edit] References
[edit] Notes
- ^ "Algaebase :: Species Detail". www.algaebase.org. http://www.algaebase.org/search/species/detail/?species_id=102. Retrieved 2008-08-10.
- ^ "laverbread - WalesOnline". www.walesonline.co.uk. http://www.walesonline.co.uk/news/wales-news/tm_objectid=14828141&method=full&siteid=50082&headline=laverbread-name_page.html. Retrieved 2008-08-10.
- ^ Wells, Emma (2010), A Field Guide to the British Seaweeds, National Marine Biological Analytical Quality Control Scheme (p 24).
- ^ Hartley, Dorthy (1954). Food in England. Macdonald & Co.. pp. 561–2. ISBN 0-356-00606-9.
- ^ "BBC - Science & Nature - Sea Life - Fact files: Sea lettuce". www.bbc.co.uk. http://www.bbc.co.uk/nature/blueplanet/factfiles/plants/sea_lettuce_bg.shtml. Retrieved 2008-08-10.
- ^ "Scottish plant uses". 193.62.154.38. http://193.62.154.38/cgi-bin/nph-readfile.pl/dataset=/parent=usedata/filename=common?281913. Retrieved 2008-08-10.
- ^ Mason, Laura (2008-05-20). "Great British Bites: laverbread - Times Online". London: www.timesonline.co.uk. http://www.timesonline.co.uk/tol/life_and_style/food_and_drink/real_food/article3969119.ece. Retrieved 2008-08-10.
- ^ "Laverbread Parsons Pickles » Home". laverbread.com. http://laverbread.com/. Retrieved 2008-08-10.
- ^ Don, Monty (2001-11-11). "Down your way". London: guardian.co.uk. http://www.guardian.co.uk/lifeandstyle/2001/nov/11/foodanddrink.gardens. Retrieved 2008-08-10.
- ^ "Traditional Welsh Recipes". welsh-recipes.the-real-way.com. http://welsh-recipes.the-real-way.com/cawl-lafwr-(laver-soup).html. Retrieved 2008-08-13.
- ^ "Black Mountains Breakfast — Brecon Beacons National Park". www.breconbeacons.org. http://www.breconbeacons.org/content/visit-us/local-food_and_drink/brecon-beacons-black-mountains-breakfast. Retrieved 2008-08-10.
[edit] Bibliography
- Lamb, Leeks and Laverbread, Gilli Davies, Grafton (16 Mar 1989), ISBN 0586201394
[edit] External links
- Laver (Porphyra umbilicalis) at Wikimedia Commons
- Laver (Porphyra umbilicalis) at Wikispecies
- Laver (Porphyra umbilicalis) at Integrated Taxonomic Information System
- Laver (Porphyra umbilicalis) at Encyclopedia of Life
- Laver (Porphyra umbilicalis) at BioLib
- Laver (Porphyra umbilicalis) at Global Biodiversity Information Facility
- Laver (Porphyra umbilicalis) at Animal Diversity Web
