Persicaria odorata

A perennial herb used in Southeast Asian cuisine

Persicaria odorata, commonly known as Vietnamese coriander, is a perennial herb native to Southeast Asia. It is widely used in Vietnamese cuisine and other Southeast Asian culinary traditions. The plant is known for its distinctive aroma and flavor, which is reminiscent of coriander (Coriandrum sativum).

Description

Persicaria odorata is a tropical plant that thrives in warm, moist environments. It typically grows to a height of 15–30 cm (6–12 inches) and has a sprawling habit. The leaves are lanceolate, measuring 3–5 cm in length, with a dark green color and a distinctive purple-brown chevron marking. The stems are jointed and can root at the nodes, allowing the plant to spread easily.

The plant produces small, white to pink flowers, although it is primarily grown for its leaves rather than its flowers. The leaves have a strong, spicy aroma and a flavor that is often described as a combination of coriander and mint.

Cultivation

Persicaria odorata is a hardy plant that can be grown in a variety of conditions, although it prefers a warm, humid climate. It can be propagated from cuttings, which root easily in water or moist soil. The plant requires regular watering and thrives in partial shade to full sun.

In temperate regions, Persicaria odorata can be grown indoors or in greenhouses to protect it from cold temperatures. It is often grown in pots to control its spread, as it can become invasive in suitable climates.

Culinary Uses

File:Vietnamese coriander dish.jpg

Vietnamese coriander used in a traditional dish

In Vietnamese cuisine, Persicaria odorata is known as "rau r_m" and is used as a fresh herb in salads, soups, and spring rolls. It is a key ingredient in dishes such as g_i gà (Vietnamese chicken salad) and bánh xèo (Vietnamese savory pancakes).

The herb is also used in Cambodian cuisine, where it is known as "chi krasang tomhom". It is used to flavor soups and stews, and is often paired with fish and seafood dishes.

Medicinal Uses

Traditionally, Persicaria odorata has been used in traditional medicine for its purported health benefits. It is believed to have digestive properties and is sometimes used to treat stomach ailments. However, scientific evidence supporting these uses is limited.

Related pages

• Coriander
• Vietnamese cuisine
• Herbs
• Polygonaceae