The delta's noodle soups, and how to order them

Across the delta, noodle soup is what people eat between dawn and mid-morning. The busiest stalls sit beside markets and river landings, and they open when the market does. A 2013 VnExpress visit found Chau Doc already busy at 6 a.m.; at Cai Rang floating market, VNAT suggests pulling alongside a noodle seller for a bowl of bún chả cá, and Al Jazeera reported in 2025 that the day's trade there ends by 8 a.m.

The practical lesson is simple: eat noodles early, near a market, where the turnover is high and the food has not been standing. Many specialist stalls close by late morning.

Bún nước lèo is the dish Soc Trang is proudest of; Vietnam News calls Soc Trang the capital of the dish. It began in Khmer kitchens and is now cooked by Kinh and Hoa cooks too. The broth is built on fermented fish — cá sặc, cá linh and the Khmer mắm bò hóc, known in Cambodia as prahok — and perfumed with ngải bún, an aromatic rhizome, and lemongrass. On top go snakehead fish, shrimp and roast pork; on the side, water spinach, banana blossom and bean sprouts.

VietnamPlus describes the Khmer version as using mắm bò hóc fermented for at least six months, with coconut water added to make the broth sweeter and clearer. The fermented-fish smell is strong. Soc Trang is now a ward of Can Tho city, and in central Can Tho, VNAT points to a stall on Đề Thám street, Phi Long, that has sold Soc Trang-style bún nước lèo since 2001. Trà Vinh, now part of Vinh Long, has its own Khmer-style bowl, known for the quantity of fresh herbs served with it.

In Bac Lieu, now part of Ca Mau province, bún bò cay is a thick, naturally red and very spicy beef noodle soup, according to Znews. Ben Co in the former Tra Vinh province is known for bánh canh, a thick-noodle soup, though our only source is a 2014 article. And Ngan Dua market in Bac Lieu gives its name to bánh tằm, hand-piped rice noodles served dry with shredded pork skin — see rice cakes and sweets. At Long Xuyen, the old floating market sold bún thịt xào, stir-fried pork over noodles, from boats.

Fermented-fish broths — bún nước lèo, bún mắm — are strong, and the smell can put off a first-time eater on an empty stomach. Start with hủ tiếu or bún cá and come back to mắm-based soups later.

If you avoid pork or shellfish, most delta broths are not for you: hủ tiếu stock uses pork bones, dried shrimp and squid, and bún nước lèo uses several fermented fish. Vegetarians will find more choice at cakes and sweets than at noodle stalls.

Finally, raw herbs are part of every bowl. They are washed in water you cannot see. WHO's five keys to safer food include using safe water and raw materials; if your stomach is sensitive, eat the cooked food and go easy on the herb plate for the first days.