Khao Piak Sen

What it really is

Khao piak sen is a Lao noodle soup known for its soft, chewy fresh noodles. Rice flour and tapioca starch give the noodles their characteristic texture, and they are cooked directly in broth, which becomes lightly thickened as they soften.

A common version uses chicken broth with chicken, garlic, fish sauce and spring onion. The noodle dough and toppings vary, and some cooks use pork or other broths; this entry describes the familiar chicken preparation.

Khao piak sen is recognized by its soft, chewy fresh noodles, commonly made with rice flour and tapioca starch. They cook directly in the chicken broth rather than being boiled separately and rinsed, so released starch lightly thickens the liquid. The texture is more substantial than a clear noodle soup but should still be spoonable. A common version includes chicken, garlic, fish sauce and spring onion; pork or another broth may be used instead. Fresh herbs, chilli and lime can be offered at the table so diners adjust the seasoning themselves. The name is retained in Lao form because it identifies a particular soup-and-noodle combination. The fresh rice-and-tapioca noodle profile distinguishes the dish. Fish sauce is part of the representative seasoning and explains the fish allergen declaration, but a kitchen that omits it should update its disclosure. Rice and tapioca dough is not wheat-based in this profile; shared equipment or toppings can still introduce other allergens.

The figures are low-confidence estimates per 100 g of chicken soup and fresh rice-tapioca noodles. Fish sauce is included in the representative seasoning, so fish is declared; broth recipes should be checked individually.

How it's served

• Serve hot in a bowl with the noodles and broth together.
• Fresh herbs, chilli and lime may be offered separately.

How to write it on the menu

A menu should say whether noodles are made in-house, as fresh versus dried noodles noticeably change their texture.