Oregano

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Oregano
Flowering oregano
Flowering oregano
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Lamiales
Family: Lamiaceae
Genus: Origanum
Species: O. vulgare
Binomial name
Origanum vulgare
L.

Oregano or Pot Marjoram (Origanum vulgare) is a species of Origanum, native to Europe, the Mediterranean region and southern and central Asia. It is a perennial herb, growing to 20-80 cm tall, with opposite leaves 1-4 cm long. The flowers are purple, 3-4 mm long, produced in erect spikes. Its name derives from the Greek origanon [ὀρίγανον]: oros [ὄρος] “mountain” + the verb ganousthai [γανοῦσθαι] “delight in”.

Cultivation and uses

File:Oregano.jpg
Oregano growing in a field.

The subspecies of oregano Origanum vulgare hirtum is an important culinary herb. It is particularly widely used in Greek and Italian cuisines. It is the leaves that are used in cooking, and the dried herb is often more flavourful than the fresh.[citation needed]

Oregano is often used in tomato sauces, fried vegetables and grilled meat. Together with basil, it contributes much to the distinctive character of many Italian dishes.

Oregano combines nicely with pickled olives, capers and lovage leaves. Unlike most Italian herbs,[citation needed] oregano works with hot and spicy food, which is popular in southern Italy.

Oregano is an indispensable ingredient for Greek cuisine. Oregano adds flavour to the Greek salad and is usually used separately or added to the lemon-olive oil sauce that accompanies almost every fish or meat barbecues and some casseroles.

File:Oregano in Pot.jpg
Oregano growing in a pot.

It has an aromatic, warm and slightly bitter taste. It varies in intensity; good quality is so strong that it almost numbs the tongue, but the cultivars adapted to colder climates have often unsatisfactory flavour. The influence of climate, season and soil on the composition of the essential oil is greater than the difference between the various species.

The related species Origanum onites (Greece, Asia Minor) and O. heracleoticum (Italy, Balkan peninsula, West Asia) have similar flavours. A closely related plant is marjoram from Asia Minor, which, however, differs significantly in taste, because phenolic compounds are missing in its essential oil. Some breeds show a flavour intermediate between oregano and marjoram.

Pizza

The dish most associated with oregano is pizza. Its relatives have probably been eaten in Southern Italy for centuries.

Health benefits

Oregano is high in antioxidant activity, due to a high content of phenolic acids and flavonoids (PMID 16218659, PMID 12730411). Additionally, oregano has demonstrated antimicrobial activity against food-borne pathogens such as Listeria monocytogenes (PMID 16218659). Both of these characteristics may be useful in both health and food preservation. In the Philippines, oregano (coleus aromaticus) is not commonly used for cooking but is rather considered as a primarily medicinal plant, useful for relieving children's coughs.
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Branch of dried oregano

Other plants called oregano

Mexican oregano, Lippia graveolens (Verbenaceae) is closely related to lemon verbena. It is a highly studied herb that is said to be of some medical use and is common in curandera female shamanic practices in Mexico and the Southwestern United States. Mexican oregano has a very similar flavour to oregano, but is usually stronger. It is becoming more commonly sold outside of Mexico, especially in the United States. It is sometimes used as a substitute for epazote leaves; this substitution would not work the other way round.

Several other plants are also known as oregano in various parts of Mexico, including Poliomintha longiflora, Lippia berlandieri, and Plectranthus amboinicus (syn. Coleus aromaticus), also called Cuban oregano.

See also

References and external links

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