A golden, crisp-fried square spring roll that, cracked open, reveals a dense filling of fresh shrimp and sea crab meat mixed with pork, wood ear mushroom, and glass noodles — this is nem cua bể, a dish Hai Phong locals take real pride in, and one of the city's two culinary calling cards alongside bánh đa cua.
The square fold: Hai Phong's own innovation
The Vietnamese-language Wikipedia entry for 'Nem cua bể' states plainly that the square fold (nem vuông) is unique to Hai Phong, clearly distinct from the round, elongated spring rolls common in Hanoi and Ho Chi Minh City; the entry also names this dish, alongside bánh đa cua, as one of the two dishes most representative of Hai Phong cuisine. VnExpress Du Lịch ran two separate features naming specific shops by name: Nem Cua Bể Phương Mai, near Cát Cụt Street, with nearly 44 years in business, and Thuận Yến, near Cốc Đạo Market, with almost 40 years — each documenting its own family history.
From street snack to a name copied nationwide
The traditional method insists on using only fresh shrimp and sea crab meat, hand-rolled and fried to order, never dried shrimp or other substitutes — a quality line the old shops hold in common. As the dish's fame has spread, Hanoi and Ho Chi Minh City now both have stalls selling under the banner of 'nem cua bể' or 'nem vuông,' meaning Hai Phong's square-fold invention has effectively traveled well beyond the city that created it. Phương Mai and Thuận Yến, as listed here, are two verified starting points among many old shops — not an exhaustive ranking.
How to Eat It Right
- It's best fresh and hot from the fryer — a crisp shell is the whole point.
- Usually rolled up with lettuce and herbs, which cuts the richness and adds freshness.
- The dip is typically a sweet-spicy fish sauce — adjust how much you use to your own taste.
Know This Dish's Backstory
- The square fold is Hai Phong's own innovation, explicitly documented by Vietnamese Wikipedia as unique to the city.
- Both Phương Mai and Thuận Yến have concrete VnExpress coverage and a verifiable track record of nearly 40 years.
- Square spring rolls are now sold nationwide, but Hai Phong remains the true birthplace of this dish.
A square crab spring roll wraps up Hai Phong's stubborn creative streak — even the fold has to be different from everyone else's. That stubbornness has become the whole city's pride.