The plate of herbs, and what is actually on it

Every noodle bowl in Vietnam arrives with a companion plate of leaves that nobody explains. Most visitors either ignore it or tip the lot in at once, and the second is the worse of the two mistakes.

A Vietnamese market sells well over a dozen culinary herbs. Six of them do most of the work on a restaurant table, and knowing which is which changes how the food tastes rather than merely what it is called.

What is actually on the plate?

Six Vietnamese herbs turn up more than the rest, plus sprouts, lettuce and often banana blossom. Which combination arrives depends on the dish and the region rather than on the price of the meal.

A full plate at a bun cha place runs to eight or nine items and costs nothing. The kitchen includes it, refills it on request, and throws away the remainder by the kilo at the end of service.

Rau ram and diep ca are the two visitors notice, and diep ca is the one people push to the side of the plate. In a blind tasting it is the herb that splits a table fastest, usually about half and half. Neither is an accident: both are chosen for the dish they arrive with.

How are you supposed to use them?

A few leaves at a time, torn in as you eat. The heat of the broth wilts them and releases the oil, and the last third of the bowl tastes different from the first — which is the design.

Tipping the whole plate in at once cooks everything at once, turns the broth green and flattens exactly the contrast the dish is built on. Watch what the table next to you does; almost nobody local empties the plate in one go.

With grilled meat, the herbs go around the meat rather than into anything. That is the spring roll logic applied at the table, and it is how bun cha and most grilled dishes are eaten.

Which herbs come with which dish?

Pho gets basil and coriander, with saw-tooth herb in the south. Count the plate and the regional split is obvious: a northern bowl arrives with two or three things beside it, a southern one with five or six. Northern and southern pho differ more in what arrives beside the bowl than in the broth itself, which is the single clearest regional split on a Vietnamese table.

Bun cha and the grilled dishes get the fuller plate, including fish mint and perilla. Snail dishes and duck take rice paddy herb almost without exception, and cha ca takes dill by the double handful, which almost nothing else here does. The noodle soup guide covers the bowls; this is what sits next to them.

Is it safe to eat them raw?

The raw herbs are the honest risk here, not the cooked food. Kitchens wash the leaves in water of unknown quality and leave them at room temperature on the counter. That is exactly the profile the street food safety guide identifies as the real problem.

Most visitors eat them for weeks without trouble, and Vietnamese herbs are eaten raw by the entire country three times a day. Anyone being careful, early in a trip or with a delicate stomach, should treat the herb plate as the thing to decline. The hot bowl itself is fine.

How do you ask for none?

Khong rau, no greens, and it is understood everywhere. Written on a phone screen it needs no pronunciation, which the language guide suggests for most food requests.

Declining does cost you something real. The plate is not a garnish; it is a component, and a bowl of pho without basil is a thinner dish than the one the cook intended.

Where do the herbs come from?

Mostly from small market gardens close to where they are sold, which is why the plate changes as you travel. A bunch at a market costs 5,000 to 10,000 dong — at about 26,000 dong to the dollar, well under half a US dollar. Rau ram earns its own mention in the salad guide, where it does structural work rather than decorating a plate.

Tra Que, a herb village of about 40 hectares just outside Hoi An, grows for the whole town and runs visits. A genuinely good hour, and the cooking class guide explains how it usually gets bundled into a morning.

The herbs also explain something about the food generally. Vietnamese cooking leans on fresh aromatics at the table rather than long-cooked spice in the pot. That is why the fish sauce in the broth stays in the background rather than dominating.