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    Vietnamese Coriander (Polygonum odoratum Lour.)

    Synonyms

    botPersicaria odorata (Lour.) Soják
    Chinese
    (Cantonese)
    越南香菜 [yuht nàahm hēung choi], 喇沙葉 [lāak sāa yihp]
    Yuht naahm heung choi, Laak saa yihp
    Chinese
    (Mandarin)
    越南香菜 [yuè nán xiāng cai], 喇沙葉 [lā shā yè]
    Yue nan xiang cai, La sha ye
    CzechKokořík vonný
    DanishVietnamesisk Koriander
    EnglishSmartweed, Laksa plant, Vietnamese mint
    FrenchRenouée odorante
    GermanVietnamesischer Koriander, Wohlriechender Knöterich
    HmongLuam lows
    HungarianVietnámi menta
    KhmerChi krassang tomhom, Xang-hum
    LaotianPhak pheo, Phak phew
    MalayDaun kesum, Daun laksa, Daun kesom (Singapore)
    PortugueseHortelã-vietnamita
    RussianКупена лекарственная
    Kupiena lekarstvennaya
    Thaiผักไผ่
    Pa pao, Chan chom, Hom chan, Pak pai, Phak phai
    VietnameseRau răm
    Rau ram
    Polygonum odoratum/Persicaria odorata: Vietnamese cilantro sprig
    Vietnamese Coriander sprig

    Used plant part

    Leaves, always used fresh.

    Plant family

    Polygonaceae (buckwheat family)

    Sensory quality

    The herb has a coriander-like smell with a clear lemony note. Pungency, which dominates in the closely related water pepper, is hardly present. See also lemon myrtle about citrus-scented spices.

    Main constituents

    In the essential oil of Vietnamese coriander, long-chain aldehyde s were found, e.g., decanal (28%) and dodecanal (44%), furthermore decanol (11%). Sesquiterpenes (α-humulene, β-caryophyllene) account for about 15% of the essential oil. (Journal of Essential Oil Research, 9, 603, 1997)

    Origin

    Vietnamese coriander is native to peninsular Southeast Asia (Indochina).

    Etymology

    The genus name Polygonum (English: knotweed) refers to the shape of the stem, which is composed of many joints linked together by slightly bent “knots” or “knees”: Greek polys [πολύς] “many” and gony [γόνυ] “knee”.

    In Singapore, Vietnamese coriander is known as laksa plant (also laksa herb or laksa leaves); in Singaporean Cantonese, there is the equivalent name laksa yip [喇沙葉]. These names reflects the usage of Vietnamese coriander for the Chinese-Malaysian noodle “curry” laksa, which in turn is apparently named for its many ingredients: The Hindi term lakh [लाख], also often used by Indians when speaking English, means “hundred thousand” or metonymically “many”, being derived from synonymous Sanskrit laksha [लक्ष] or lakshya [लक्ष्य].

    The term “Vietnamese mint” frequently found in English literature is botanic nonsense, as peppermint belongs to a distant plant family, Lamiaceae.

    Selected Links

    Sorting Persicaria names (www.plantnames.unimelb.edu.au) Recipe: Laksa (dawncities.com) Recipe: Laksa (soupsong.com) Recipe: Laksa (recipesource.com) Recipe: Laksa Penang (www.rogis.net) Recipe: Singapore Laksa (cheftochef.net) Recipe: Laksa Lemak (recipecottage.com)


    Polygonum odoratum/Persicaria odorata: Vietnamese cilantro
    Vietnamese coriander (sterile plant)
    Vietnamese coriander is one of those numerous herbs that give Vietnamese cuisine its unique touch. The herb is, though, also used outside of Vietnam: It appears in Malaysian recipes and is quite typical of the Singaporean cuisine.

    In Vietnam, particularly in the South, fresh herbs are a conditio sine qua non of food. A typical South Vietnamese noodle soup (pho [phở]) is based on broth (often from chicken, pork or fish, or a combination therefrom) with a variety of different ingredients, which usually include small meat pieces, boiled and raw vegetables, fish balls, young onion greens and fried garlic slices. The soup is served with a large amount of additional flavorings, which are left to the diner to finalize his soup: lime wedges, mustard paste, nuoc mam [nước mắm] fish sauce, fresh red chile slices and a host of herbs which are dipped into the soup using chopsticks and eaten together with a spoonful of soup. Similarly, stir-fried meat and vegetables are never seen without generous amounts of chopped herbs, and the same holds for the tasty Vietnamese sandwiches, a colonial heritage. Since Vietnamese cooking is far less spicy than, for example, Thai cooking, the herbs are indispensable for the true taste of Vietnam.

    The herb far most common for this purpose is coriander, whose ubiquitous occurrence in Vietnam tends to frustrate Western tourists; second in demand are long coriander and Vietnamese coriander. Occasionally, mints, the chameleon herb, perilla and basil are used. A herb limited to special applications is the rice paddy herb. In Southern Vietnam, herbs are of more importance than in the Chinese-influenced North. See Vietnamese Cinnamon on North Vietnamese noodle soups.

    In Malaysia, Vietnamese coriander is a common garnish for many kinds of foods, only one example of which is the soupy noodle dish laksa, which is native to the entire Malaysian peninsula, but most often associated with the cuisine of Singapore. Singapore laksa differs from related foods prepared in Malaysia mostly by the use of coconut milk, which turns the originally clear soup into a creamy, rich “curry” dish.

    The native cuisine of Singapore is often referred to as Nonya cuisine, where “Nonya” refers to a people of mixed Malay and Chinese ancestry also known as “strait Chinese”; the correct form is peranakan (baba for males and nyonya for females). Their settlement in Malacca (South Malaysia and Singapore) goes back to the voyages of the Chinese admiral Zheng He [郑和] in the early 15.th century. Vietnamese coriander plays an important rôle in their cuisine. Singaporean laksa is made of boiled meat (chicken is most common), sea food (fish, crabs) and a variety of vegetables (bean sprouts, celery stalk, cucumber). The seasoning is due to a spice paste (bumbu) made from lemon grass, fresh turmeric, galanga, chiles, garlic and shrimp paste (balacan, trassi). Before serving, chopped Vietnamese coriander is sprinkled over the bowl liberally; according to educated opinions from Singapore, regular coriander would be a poor surrogate.



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    Modification date: 7 Feb 2006