A Cantonese steamed dish of large prawns butterflied along the back and set, shells on, over a bed of soaked mung-bean vermicelli. Each prawn is crowned with 金银蒜 — a mix of raw and pre-fried minced garlic — then the plate is steamed just until the prawns turn opaque, finished with a splash of hot oil and seasoned soy. The vermicelli soaks up the prawn juices and garlic oil from below while the garlic on top stays fragrant rather than scorched. It is a fast home and restaurant dish that turns on the quality of the garlic and the precision of the steaming.
Steamed prawns with garlic and vermicelli belong to the Cantonese tradition of gentle steaming that prizes the natural sweetness of very fresh seafood; no single inventor or date is recorded. Its defining element is 金银蒜, literally 'gold-and-silver garlic,' a Cantonese kitchen preparation in which half the minced garlic is fried to golden 金蒜 and the other half left raw as 银蒜, then combined. The two-garlic method is widely used across Cantonese steamed seafood — scallops on the half-shell, razor clams, crab — and the prawn-and-vermicelli version is among its most common household forms. The mung-bean vermicelli (粉丝) beneath is there to catch the rendered juices, an old habit in steamed seafood plates.
The prawn comes off its split shell in one firm, sweet, springy piece, glistening and just-set, never rubbery. The garlic is the whole point — the fried half gives a deep nutty fragrance, the raw half a fresh pungent edge, and the hot oil poured at the end lifts both into the air. Underneath, the vermicelli is slippery and soaked through with prawn juice, garlic oil, and soy. Done well, the prawn is just opaque to the center and the garlic is golden and sweet; done badly, the prawns are oversteamed to a dry, squeaky toughness, the garlic on top is burnt and bitter, or the vermicelli is left dry and clumped because it was under-soaked.
Steaming cooks the prawns in moist heat at around 100°C, so the muscle proteins set just to firmness without the water loss and toughening that hard, dry heat causes; a few minutes is enough, and the carry-over heat finishes them, which is why oversteaming is the main failure. The 金银蒜 method exists because of garlic chemistry: when garlic is cut, the enzyme alliinase converts alliin into allicin and related sulfur compounds, the source of its sharp pungency. Frying part of the garlic to golden 金蒜 denatures the enzyme and drives Maillard browning, trading raw bite for a mellow, nutty sweetness; keeping the rest raw as 银蒜 preserves the fresh allicin punch, and combining the two gives both depth and lift. The final pour of smoking-hot oil over the garlic blooms its aroma compounds at once and crisps the surface, while the vermicelli below acts as a sponge for the fat-soluble flavors steamed out of the prawns.
Variations
The same plate is made with scallops on the half-shell (金银蒜蒸扇贝), razor clams, oysters, or crab in place of prawns. Some cooks add a little steamed black bean (豆豉) or a pinch of chopped chili to the garlic; the soy can be a plain seasoned light soy or the sweeter steamed-fish soy (蒸鱼豉油). The vermicelli is sometimes swapped for thicker glass noodles or omitted entirely for a cleaner prawn dish. Many recipes lay the prawns split and open like a butterfly so they fan out and hold more garlic; others leave them whole and merely score the backs.
On the Palate
Where Garlic-Vermicelli Steamed Shrimp sits in the Chinese flavor cloud
Ingredients
Serves 3
How it's made
7 steps · 18 min active + 12 min waiting
- 110 min
Soak the mung-bean vermicelli in warm water until soft and pliable, then drain and spread it in a shallow heatproof dish.
- 25 min
Make the 金银蒜: mince a generous amount of garlic, fry about half of it in oil over low heat until golden and fragrant, then stir the fried garlic and its oil into the remaining raw garlic; season with a little salt, sugar, and oil.
Watch outFry half the garlic golden, then stir it back into the raw half — the fried gives mellow nutty sweetness, the raw keeps a sharp bite; together that's the 金银蒜.
- 34 min
Shell the prawns down the back (leaving the head and tail shell on if you like), devein, and split each along the back so it opens flat without cutting all the way through.
- 42 min
Arrange the prawns cut-side up over the vermicelli and spoon the garlic mixture generously over each one.
- 57 min
Steam over rapidly boiling water for about 6 to 8 minutes, just until the prawns turn opaque and curl; do not overcook.
Watch outSteam only 6 to 8 minutes, just until the prawns turn opaque and curl — moist heat sets them tender, but a minute too long and they go dry and rubbery.
- 61 min
Scatter chopped scallion over the top and drizzle the prawns with seasoned light soy or steamed-fish soy.
- 71 min
Heat oil until smoking and pour it over the garlic and scallion so it sizzles and releases its aroma; serve at once.
Watch outPour smoking-hot oil over the garlic and scallion so it sizzles — that final sear is what releases the full aroma; lukewarm oil just sits there.
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