The history of dim sum

Dim sum was never designed as a meal. Understanding why explains almost everything about what is in the freezer aisle today — and what has to change.

1. It began with the tea, not the food

• 1757. The Qianlong emperor restricts Western trade to a single port: Guangzhou.
• Tea becomes cheap and everywhere in the city that handles it.
• Drinking tea in public becomes a habit — 飲茶, yum cha, literally “drink tea.”
• Food was the accessory. Something to hold while the pot was refilled.

2. The two-cent house

• 一厘館 — the one-cent stall. Street vendor. Wooden tables, wooden benches.
• 二厘館 — the two-cent house. Guangzhou’s earliest teahouses, sited where the labour was: the docks and the food markets.
• The customer was a working man before a shift, paying in fractions of a cent.

One cup, two pieces. The Cantonese shorthand for a morning: a pot of tea and two small things to eat. Not two courses. Two pieces.

3. Up the social ladder

• 茶居 — the “tea place,” built for merchants and businessmen.
• 茶樓 — the “tea house,” late Qing, serving the bureaucracy.
• As the room got grander, the kitchen got ambitious. Cheap fuel for labourers turned into a craft with a competitive edge.

4. Siu mai was, literally, a sideline

• The older written name is 捎賣 — roughly, sold on the side. It was the thing sold alongside the tea.
• The form is not originally Cantonese. Shaomai travelled south; Shanxi merchants carried it to Beijing and Tianjin, and Hohhot in Inner Mongolia holds its own recognised craft lineage to this day.
• Guangdong made it famous. The Cantonese version — pork, shrimp, black mushroom, thin yellow wrapper, open top, a dot of crab roe or diced carrot — is the one the rest of the world means when it says siu mai.

A sealed dumpling can carry a mediocre filling and survive on its wrapper. 燒賣 shows you the filling before you taste it, and again while it steams. There is nowhere to hide a coarse chop, a wet mix, or a filling extended with starch.

5. Har gow, and the arms race

• 蝦餃 appears in early twentieth-century Guangzhou, from a teahouse kitchen working with Pearl River shrimp.
• A translucent wheat-starch skin that has to hold a whole prawn without tearing.
• It became the benchmark — the dish by which one kitchen is measured against another.

6. Hong Kong, and the trolley

The trolley is the reason the food is shaped the way it is.

• It has to survive standing in a warm steamer for twenty minutes.
• It has to be chosen in two seconds, at a distance, by sight.
• It has to be small enough that saying yes four times is not a commitment.

7. What the history built into the food

• Small portions — so nothing fills you and the ordering continues.
• Many dishes — so the table keeps changing.
• Starch-forward construction — because it was priced for a labourer’s morning.
• Protein as flavour, not as load — a seasoning, not the substance.
• Tea throughout — to cut the richness and reset the palate.

None of that is a mistake. It is a correct answer to a question nobody is asking any more.

8. The brief changed. The food didn’t.

What is sold as convenience is a grazing food asked to do a job it was never engineered for. Roughly 2 g of protein a piece is not an oversight by any manufacturer. It is what happens when you industrialise a snack and sell it as dinner.

9. What a renewal actually means

A renewal and variation on the Cantonese tradition. Two words, two different jobs.

• Renewal — the form is kept. Open-topped siu mai. Thin wrapper. Filling you can see before you taste it. Steamed, not fried.
• Variation — the formulation moves. The V25 controlled baseline is 25 g of protein and 10 g of dietary fibre per two-piece serving. Fully cooked before it is frozen; final label values remain pending verification.

Two hundred years of Cantonese cooks changed this food every time the room changed. The trolley was an invention. The order sheet was an invention. Treating the tradition as finished is the only genuinely untraditional thing you can do to it.

Sources

• “Cantonese morning tea (Yum Cha): a bite of Cantonese culture” — Journal of Ethnic Foods, Springer, 2023. The 1757 decree, 一厘館 / 二厘館 / 茶居 / 茶樓, and 一盅兩件.
• Shumai — the 捎賣 naming, the northern lineage and the Shanxi merchant route, the Hohhot craft designation, and the Cantonese variant.
• “Hidden Hong Kong: A history of dim sum in Hong Kong” — Localiiz. The Hong Kong teahouse districts, Lin Heung, post-war all-day dining, and the trolley era.
• “Har Gow: History of Cantonese Shrimp Dumpling” — early twentieth-century Guangzhou origin and the Pearl River shrimp supply.
• Category protein figures are from our own panel-by-panel survey — see the full comparison.

Dates for the earliest Guangzhou teahouses are traditional rather than documented to the year. Where a source gives a range, we have used the range.

Nourvo figures are the current formulation specification. First commercial run August 2026; third-party laboratory analysis is commissioned ahead of first label print. Category figures are read from published Nutrition Facts panels and are sourced on the full comparison.