How is it different from som tam or larb?
Au pla is a curry made with freshwater fish. Unlike som tam, where papaya is pounded, or larb, where minced meat is seasoned, you can have the fish and the sauce with rice.
Au Pla
If you want to try an Isan dish other than som tam in Khon Kaen, look for au pla. It is a spicy, salty curry made with freshwater fish. If you like fish dishes, it is worth choosing to eat with rice. The fish and seasonings used can differ from shop to shop.
It is a curry that adds heat and saltiness to freshwater fish. You get a different kind of meal from dishes with crunchy vegetables such as som tam, or meat dishes such as larb. Have it a little at a time with rice.
Eat slowly and watch for fish bones.
In Isan there is a culture of using freshwater fish from the rivers in cooking. Au pla is the menu item presented as a local dish of Khon Kaen. It suits anyone who has had som tam and larb, which are known across Isan, and now wants to learn about another dish of Khon Kaen.
Au pla is a curry made with freshwater fish. Unlike som tam, where papaya is pounded, or larb, where minced meat is seasoned, you can have the fish and the sauce with rice.
Yes. It is a menu item that the Tourism Authority of Thailand presents as a local dish of Khon Kaen. If you want to try a freshwater fish dish on an Isan trip, it is worth a look.
If you want to read more about the food and the regions behind it, these sources are a good next step. Ingredients and cooking methods can differ from one place to the next.