Thailand Guide

Fermented Fish Som Tum in Khon Kaen ส้มตำปลาร้า

Fermented-fish som tum is a green papaya mortar with fermented fish sauce and salted crab, and it is not on the printed board. Praprai on Airport Road serves it from 10:30 to 22:00 and is closed Monday.

Khon KaenTypical plate 50 to 90 THBsom tum pla ra Thai food hub
Fermented Fish Som Tum in Khon Kaen

Photo: Charles Haynes (CC BY-SA 2.0)

Thaiส้มตำปลาร้า · som tum pla ra
PriceTypical plate 50 to 90 THB
RoomPraprai, Airport Road
Clock10:30 to 22:00; closed Monday

What it tastes like

  • Papaya, fermented fish, and salted crab. Funkier and hotter than a Bangkok som tum.

How to order it

  • Thai name: som tum pla ra (ส้มตำปลาร้า).
  • Say: Khor som tum pla ra, khrap/kha.
  • 10:30 to 22:00, closed Monday. Ask for som tum with fermented fish sauce and salted crab. A typical plate is 50 to 90 THB.

Typical price

  • 2026 cash: Typical plate 50 to 90 THB.

Where to try it

  • Praprai, 345/1-2 Airport Road, Ban Pet, Khon Kaen 40000. 10:30 to 22:00; closed Monday. Typical plate 50 to 90 THB. Skip this, go here: The printed board does not show this mortar, so an order that stays on the board will miss it. The fried plate on the menu is fried sour fish, a typical 120 to 250 THB.

Spice level and diet

  • Heat: Hot. Say pet nit noi.
  • Diet: Fish sauce and crab. Not a vegetarian mortar unless they build one without pla ra.

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Common questions

Is this on the printed menu?
It is not on the printed board. Ask for som tum with fermented fish sauce and salted crab.
Which day is the room closed?
It is closed on Monday. Other days run from 10:30 to 22:00.