Vietnamese coriander

What is Vietnamese coriander?

This herb belongs to the knotweed family, not the mint family despite its common names. It grows as a low perennial with dark green tops and deep red undersides on its leaves. The stems are jointed and spotted with chestnut hues. The foliage offers a bright, lemon-like aroma with a peppery kick. Its taste sits somewhere between cilantro and lime, providing a refreshing contrast to heavy meats and rich fats.

Where does Vietnamese coriander come from?

The plant originates across Southeast Asia and parts of East Asia. It is native to Cambodia, Vietnam, Laos, Thailand, Malaysia, Indonesia, Myanmar, China, Japan, and Taiwan. In these regions, it has long been cultivated for culinary use. Some sources suggest its similarity to mint and coriander is an example of convergent evolution, where unrelated plants develop similar traits independently.

What does Vietnamese coriander taste like?

The distinct taste comes from aldehydes like decanal and alcohols such as dodecanol found in its essential oil. These compounds create a sharp, citrusy profile. The flavor is often described as pungent and herbal, resembling a mix of lime and parsley. This brightness helps balance the heat of chilies and the richness of coconut milk in regional dishes.

How Vietnamese coriander is grown and processed

It thrives in warm, damp tropical and subtropical climates. The plant prefers full sun and moist, well-drained soil. It can grow up to thirty centimeters tall. In cooler zones, it must be brought indoors during winter or grown under glass. Propagation is easy via semi-ripe cuttings placed in water until roots form. Seeds can also be sown in spring or autumn.

How Vietnamese coriander is used

In Vietnam, the leaves are eaten fresh in salads and raw rice paper rolls. They accompany soups like canh chua and stews. A popular pairing is with fertilized duck eggs. In Malaysia and Singapore, shredded leaves are essential in laksa, a spicy noodle soup. Cambodians use them in summer rolls and curries. Lao and Thai cooks add them to raw beef salads, while Burmese cuisine includes them in various curries.

Vietnamese coriander in the world's kitchens

Vietnamese cuisine relies on it heavily for freshness in cold dishes. Malaysian and Indonesian kitchens treat it as a core ingredient for laksa varieties. Cambodian cooking uses it in both soups and fermented pork products. Lao and Northeast Indian preparations feature it in meat salads. Each culture utilizes the raw leaf to cut through spice and fat.

Spiritual and ceremonial use

In Vietnamese Buddhist tradition, the herb is associated with celibacy. Monks often grow it in private gardens. The belief holds that consuming the leaves helps suppress sexual urges. This practice supports the monastic vow of chastity by regulating desire through diet.

Vietnamese coriander at celebrations

It is treated as a daily staple rather than a ceremonial item.

Traditional and medicinal use

Traditional Vietnamese belief states that rau răm reduces libido. A local saying pairs it with raw bean sprouts, which are thought to have the opposite effect. While no scientific studies confirm these effects on human physiology, the cultural association remains strong among practitioners of traditional dietary rules.

The trade in Vietnamese coriander

Research in Australia investigates the plant for essential oil production. The extracted oil contains aliphatic aldehydes useful in the fragrance industry. However, large-scale trade routes or historical monopolies are not detailed in the available records.

Meal

The herb appears primarily at lunch and dinner. It serves as a fresh garnish for noodle soups and savory salads. It is also common as a snack component in street food stalls, particularly within fresh spring rolls. Its crisp texture makes it suitable for immediate consumption rather than cooking.

Questions people ask about Vietnamese coriander

Good reading and sources

• Persicaria odorata on WikipediaEncyclopedia
• More photos on Wikimedia CommonsPhotos and video
• Wikidata recordOpen data