Rau Ram, known in English as Vietnamese coriander, is one of those herbs that instantly transforms simple meals into bright, memorable dishes. With a zesty, citrusy aroma sharpened by a herbal peppery kick, rau ram brings depth and lift to salads, soups, and grilled favourites. The herb is widely used across South-East Asian cookery and is prized by home cooks and professional chefs for its versatility and distinctive character. In this article, we explore Rau Ram in depth—from its identity and flavour to growing it at home, pairing it with foods, and a handful of delicious recipes that showcase its unique charm.
Rau Ram Explained: Identity, Names and Botanical Background
Rau Ram is the Vietnamese coriander, a fragrant herb whose botanical name is Persicaria odorata. It is sometimes listed in older texts as Polygonum odoratum, reflecting its taxonomic history. The herb resembles a delicate, slender-leaved plant with a crisp texture and a distinctive aroma that hints at citrus, mint and pepper all at once. When you encounter rau ram in a market, you’ll notice its bright green, spear-like leaves, and a scent that’s both refreshing and slightly peppery. In culinary circles, you may also see it referred to as Vietnamese coriander or ram ram in playful or regional spellings, but rau ram remains the most widely recognised name in UK markets and cookbooks.
The Distinctive Flavour of Rau Ram
Understanding the flavour profile of rau ram is essential if you want to use it to its full potential. The herb delivers:
- A bright citrus note that lightens heavier dishes.
- A peppery bite that adds a touch of heat without overpowering other flavours.
- A green, herbaceous core that complements fresh vegetables, seafood and poultry.
- A crisp, aromatic finish that lingers pleasantly on the palate.
Rau Ram’s aroma is best released when the leaves are lightly bruised in the fingers, or when added at the final moment of assembly in a dish. This allows the essential oils to perfume the dish without being overwhelmed by heat or prolonged cooking. For those exploring the auras of herbs, the herb is often paired with lime, fish sauce, garlic and chili—common building blocks in Vietnamese and wider South-East Asian cooking.
Culinary Uses: How Rau Ram Elevates Dishes
Rau Ram is exceptionally versatile. It shines as a fresh herb in raw preparations and as a garnish that lifts briny, savoury, and smoky flavours alike. Below are popular uses that demonstrate rau ram’s culinary range.
- Fresh salads and herb bowls where the leaf’s brightness counters creamy dressings or rich meats.
- Vietnamese Goi (salads), notably Goi Rau Ram with chicken or pork, and with green mango for a tart contrast.
- Spring rolls and fresh rolls, where a few leaves contrast with rice noodles and crisp vegetables.
- Garnish for pho, bun thit nuong, and other noodle soups, adding a lift to broth-based dishes.
- Grilled meats and seafood, where rau ram can be added as a finishing herb or folded into sauces for a sharp, fresh edge.
- Herb-centric marinades and dressings that benefit from a citrusy, peppery note.
Reversing the word order from rau ram to ram rau is a little culinary joke some cooks enjoy, highlighting the flexible identity of the herb in markets and kitchens alike. The essential point remains: rau ram is the bright, aromatic herb that can unify disparate flavours and elevate a platter with minimal effort.
Goi Rau Ram: A Fresh Vietnamese Salad
Goi Rau Ram translates roughly to a rau ram-inspired salad that is light, vibrant and perfect for warm weather. Here’s a straightforward version that you can adapt to your pantry.
- Ingredients: fresh rau ram leaves (torn or whole), shredded green mango or papaya, cooked shredded chicken or boiled prawns, thinly sliced carrot, cucumber ribbons, coriander leaves, toasted peanuts, lime wedges, and a dressing made from lime juice, fish sauce, sugar, and a splash of chili.
- Method: Toss greens with the mango, cucumber, and carrot. Top with protein, herbs, and peanuts. Drizzle with dressing and serve immediately.
- Tip: Add rau ram at the end to maintain its crispness and aroma.
This salad showcases the herb’s brightness against sweet, sour and salty notes, making it a perfect companion for grilled meats or as a light starter after a heavier main.
Spring Rolls with Rau Ram
Fresh spring rolls benefit from rau ram’s clean, curiously citrusy scent. A typical filling includes shrimp or tofu, vermicelli, lettuce and herbs, wrapped in rice paper with rau ram tucked inside for a hit of aroma.
- Ingredients: rice paper, cooked shrimp or tofu, vermicelli, fresh lettuce, rau ram leaves, mint, cilantro, and a dipping sauce composed of fish sauce, lime juice, sugar and chili.
- Method: Dip rice papers briefly, lay out ingredients along the middle, add rau ram, roll tightly, and serve with sauce on the side.
- Variation: swap in sliced cucumber, carrots, or avocado for a different texture and colour palette while keeping rau ram as a core herb.
Pho Garnish and Beyond
In pho and other noodle soups, rau ram is a bright, peppery finishing herb. Add a few leaves at the table for dipping and a pinch of brightness as you eat. A little rau ram can transform a simple broth into something with depth and a recognisable Southeast Asian finish. It’s also a worthwhile garnish for grilled fish en papillote or smoky barbecued chicken, where it can cut through richness with its citrusy sharpness.
Health Benefits and Nutritional Profile
Besides its culinary appeal, rau ram offers nutritional value and possible health benefits. While it should not substitute for medical advice or a balanced diet, incorporating rau ram into meals can contribute to daily vegetable intake and bring a few nutrients into your plate. It contains essential vitamins, including vitamin A and C, and minerals such as iron and calcium in modest amounts. Like many fresh herbs, rau ram provides dietary fibre and phytochemicals that may support antioxidant activity in the body.
As with any herb, variety, freshness and portion size matter. Fresh rau ram leaves have the most potent aroma and nutritional value, which diminishes with storage. Use rau ram promptly to enjoy its peak flavour and benefits.
Growing Rau Ram at Home: Tips for Pots and Garden
Cultivating rau ram in the UK or similar temperate climates is feasible, especially during the warmer months and with some simple protective steps. The plant thrives in sunny to partially shaded spots with well-drained soil and regular moisture. In pots, rau ram is particularly forgiving and can be grown indoors on a bright windowsill or under grow lights during the shorter days. Here’s how to bring a healthy crop of rau ram into your kitchen garden or balcony plot.
Climate, Soil and Light for Rau Ram
- Temperature: Rau Ram prefers warm weather but is not completely frost-tired. In cooler climates, it grows best in late spring through early autumn, and may be overwintered indoors or treated as an annual.
- Soil: Rich, well-draining soil with a slightly acidic to neutral pH (6.0–7.0) supports healthy growth. A small amount of compost provides essential nutrients, but avoid heavy, waterlogged soils.
- Light: Provide bright light, ideally 4–6 hours of sun per day. In very hot, direct sun, some afternoon shade helps prevent leaf scorch; in kitchens or balconies with filtered light, a well-lit position still yields good growth.
Propagation, Planting and Maintenance
- Propagation: Rau Ram is easily propagated from cuttings. Take a healthy stem with several leaves and place in water or directly into moist soil until roots form. Transplants are ready when they show vigorous growth.
- Watering: Keep the soil evenly moist but not waterlogged. A layer of mulch helps retain moisture in pots and prevents the compost from drying out too quickly.
- Fertiliser: A light, balanced feed every few weeks during the growing season supports lush foliage. Avoid strong, nitrogen-rich feeds that encourage excessive leaf growth at the expense of aroma.
- Pests and problems: Slugs and snails may be attracted to rau ram in damp conditions. Use organic pest control and good garden hygiene to protect young plants. If you notice discolouration or stunted growth, check drainage and water consistency.
Harvesting and Storage
- Harvesting: Cut stems from the base as needed. Regular trimming encourages bushier growth and prolongs the plant’s productive life.
- Storage: Fresh rau ram stores best in the fridge, wrapped in a damp paper towel inside a perforated bag. For longer storage, you can freeze the leaves (blanched) or dry the stems, though this will reduce aroma.
Buying and Storing Rau Ram: What to Look For
When purchasing rau ram, seek bunches with vibrant green leaves and crisp, unblemished stems. The leaves should have a noticeable citrus-herbal aroma when crushed between fingers. Avoid crates or bunches with brown tips or wilted leaves, which indicate age or poor storage conditions. In store or at market stalls, look for fragrant rau ram with an even distribution of leaves along the stems, not a compact bundle that shows signs of drying.
At home, store rau ram like other herbs: keep it cool, hydrated, and out of direct heat sources. If you buy a larger bunch than you can use promptly, consider trimming the stems and freezing the leaves in small portions or incorporating them into sauces and pestos to preserve the flavour.
Common Substitutes and Variants
Rau ram has a distinctive citrus-pepper note that is not easy to replicate, but when rau ram is unavailable, you can use a combination of fresh herbs to mimic its brightness. Some approaches include:
- Cilantro (coriander leaves) for the fresh, green aspect, paired with a touch of mint for the brightness.
- Thai basil for an aromatic lift with a subtle anise note that won’t overpower other flavours.
- Fresh mint and a squeeze of lime to emulate the clean, sharp finish of rau ram in salads and cold dishes.
- A pinch of finely chopped lemongrass or lemon balm in dressings to capture citrusy aroma.
For heat and pepper notes, a small amount of finely sliced green chilli can be added to mimic the peppery finish, though this will alter the overall flavour profile. If you’re seeking the closest replacement in recipes that rely heavily on rau ram’s identity, consider using a soft herb blend that includes both cilantro and mint, with a splash of citrus to compensate for the missing brightness.
What to Know When Growing in the UK
The UK climate can be challenging for tropical herbs, but rau ram can thrive with a little extra attention. Consider these practical tips:
- Grow rau ram in pots so you can move plants indoors during cold snaps or on days with frost risk.
- Provide a bright, sheltered spot with indirect sun; partial sun is often sufficient and helps prevent leaf scorch in warmer periods.
- Offer consistent moisture; don’t let the soil dry out completely, but avoid waterlogging that could lead to root rot.
- Use a lightweight, well-draining potting mix and refresh containers each growing season to keep plants healthy.
Creative Pairings: rau ram with Foods and flavours
Rau Ram pairs especially well with foods that benefit from a bright, herbal accent. Here are some ideas to inspire weeknight meals and weekend feasts alike:
- Seafood: prawns, white fish, and shellfish benefit from rau ram’s citrus tang in both marinades and finishing garnishes.
- Poultry: grilled chicken or turkey breast topped with rau ram adds a fresh finish to heavier meats.
- Beef and pork: combine rau ram with soy, lime, and fish sauce in a light salad or dipping sauce to cut through richness.
- Vegetable-forward dishes: rau ram brightens cooling cucumber salads, carrot slaw and cool noodle bowls.
In any dish, remember that less is more with rau ram. A few leaves or a handful of torn stems are usually enough to scent a dish without overpowering it.
Frequently Asked Questions About rau ram
Is rau ram the same as cilantro or mint?
Rau ram is distinct from cilantro and mint but is frequently used alongside them in Southeast Asian dishes. Its aroma blends citrus, herbal freshness and peppery notes, setting it apart from both cilantro’s musky brightness and mint’s cooling sweetness.
Can rau ram be grown indoors all year round?
In the UK, rau ram is typically grown as a seasonal herb. With good light and warmth, you can extend its growing period indoors using a bright windowsill or grow lights. A window or conservatory can provide the light needed to maintain healthy plants beyond summer, but expect growth to slow in autumn and winter without supplemental warmth and light.
How do I store rau ram for longer use?
The best method is to refrigerate fresh rau ram in a damp towel inside a perforated bag. For longer storage, you may blanch leaves briefly and freeze in portions, or chop and freeze in ice cube trays with a little water, lemon juice or stock for quick adding to recipes later.
Are there ethical or sustainability considerations with rau ram?
As with all fresh herbs, reducing waste is key. Buy only what you can use in the short term, and consider growing your own to guarantee freshness while reducing transport emissions. If buying in bulk, share with friends or freeze portions for later use to minimise waste.
Conclusion: The Versatile Rau Ram
Rau Ram is a unique herb that does more than garnish a dish; it elevates it. The fragrant, citrus-pepper aroma and crisp texture make rau ram a signature element in Vietnamese cooking and a welcome addition to many other cuisines. Whether you’re crafting Goi Rau Ram, rolling fresh spring rolls, or simply finishing a bowl of pho with a few leaves, this herb offers an effortless way to brighten the plate. For growers, it presents an approachable, rewarding challenge that can be enjoyed on a balcony, windowsill, or in a sunlit corner of the garden. The next time you plan a meal, consider rau ram as your flavour compass—the aromatic guide that steers you to fresh, vibrant, and delicious results.