Cốm season: young green rice, chả cốm and bánh cốm
For about six weeks in autumn, Hanoi sells immature rice grains pounded flat and wrapped in lotus leaf. Cốm is the most sentimental food in the city and the hardest to explain.
Ask a Hanoian what autumn tastes like and you will get one answer.
Cốm is rice harvested before it has hardened — still milky inside — then roasted in a dry pan and pounded flat between wooden pestles until the grains are thin, soft and pale jade green. It is sold loose, wrapped in lotus leaf and tied with a length of rice straw, from shoulder baskets, for about six weeks a year.
It tastes faintly of grass, milk and something floral from the lotus leaf. It is not sweet. Written down it sounds like almost nothing. In practice it is the food Hanoians get sentimental about in a way they do not about phở.
The season
Roughly September to late October, occasionally into early November. There is an early-season cốm (cốm đầu mùa) that is softest and most prized, and a later, firmer one.
Outside that window you will find frozen or dried cốm used in cooking, which is fine for chả cốm and bánh cốm but is not the same thing loose.
This is the article to act on immediately if you are in Hanoi in autumn. Cốm does not wait.
How to buy and eat it loose
Vendors carry it in flat baskets under a cloth, wrapped in lá sen (lotus leaf) and tied with straw. The leaf is functional, not decorative — it keeps the grains from drying and it perfumes them.
How to eat it:
- By the pinch, plain. Take a small amount between finger and thumb, put it in your mouth, chew slowly. That is the traditional method and it is not a joke.
- With a banana. A ripe
chuối tiêu— the small, fragrant local banana — eaten in alternating bites with pinches of cốm. This is the canonical pairing and it works far better than it sounds: the banana’s sweetness fills in what cốm deliberately lacks. - With
hồng(persimmon), in the weeks when both are in season. The autumn plate.
What not to do: put it in a bowl with milk. Several cafés now sell cốm smoothies and cốm lattes. They are pleasant. They are also missing the point, which is texture — cốm loses everything once it is wet.
It goes stale in a day or two. Buy a small amount, eat it that afternoon.
Price: 40,000–80,000 VND for a leaf-wrapped portion.
Chả cốm
Minced pork bound with cốm, shaped into a patty, steamed and then pan-fried.
The rice grains swell slightly and go chewy, giving the patty a texture unlike any other pork product — bouncy, studded, faintly sweet against the savoury meat. The exterior fries to a crust.
Where you meet it: on a bún đậu mắm tôm tray in autumn, or in a bún chả shop as an extra alongside the grilled pork.
The best way to order it: add it to a bún đậu tray. Thêm chả cốm. It costs 20,000–40,000 for a piece and it is the single best reason to eat bún đậu in October rather than in April.
Available year-round in shops using frozen cốm; noticeably better in season.
Bánh cốm
A small green square: a sticky shell of cốm paste around a sweet mung bean filling, wrapped in banana leaf and then in a printed paper packet.
It is very sweet, quite dense, and inseparable from one particular social function: bánh cốm is the standard Hanoi betrothal gift. When a family goes to a fiancée’s house to formalise an engagement, they bring boxes of bánh cốm and bánh phu thê. Everyone in Hanoi associates the taste with someone’s wedding.
Where: a short run of shops near the western edge of the Old Quarter, several over a century old, all selling essentially the same product from similar shopfronts with stacked green boxes in the window.
How to buy: ask for two, not a box. A box is ten or more and is intended as a gift. Two is a snack and shops will sell them singly without comment.
Price: 10,000–20,000 each.
Where cốm comes from
Traditionally from làng Vòng — Vòng village — which was farmland on the western edge of Hanoi and is now entirely swallowed by the Cầu Giấy district’s apartment blocks and university campuses.
A handful of families there still pound cốm, and cốm làng Vòng remains the name with prestige attached. Most cốm sold in Hanoi now comes from farms further out in the delta, sold under the Vòng name.
This is worth knowing mainly so you are not surprised: if you go looking for a rice village in Cầu Giấy, you will find a six-lane road. The dish outlived its address.
Where to buy
Shoulder-pole vendors, citywide, in season. The most likely encounter — a woman with a flat basket and lotus-leaf parcels, usually in the morning.
Morning markets, especially in the Old Quarter and around Cầu Giấy.
The bánh cốm shops near the Old Quarter’s western edge, for the cake version year-round.
What to look for: the colour should be soft jade green, slightly uneven — the natural colour of immature rice. Bright uniform green means dye. Grains should be soft enough to press flat between your fingers.
An autumn afternoon
If you are in Hanoi in October and want to do this properly:
- Buy a lotus-leaf parcel of cốm from a morning vendor.
- Buy two small bananas.
- Find somewhere to sit — a lake edge is traditional and correct.
- Alternate pinches of cốm and bites of banana.
- On the way back, buy two bánh cốm from a shop near the Old Quarter’s western edge.
- At lunch, order bún đậu and add chả cốm.
That is the entire cốm repertoire in one day for under 200,000 VND.
If you only do one thing
Buy a leaf-wrapped parcel from a basket vendor and a banana, and eat them together on a bench by a lake.
Do not photograph it first. Cốm looks like nothing in a photograph, which is part of why nobody outside Vietnam has heard of it and part of why Hanoians are quietly pleased about that.
Next: chả rươi — the six-week sandworm season.