Currently touring Bangkok, aided by fellow Hound, extramsg.
The Aw Taw Kaw (or Or Tor Kor in the Time Out Bangkok guide) was a psychedelic swirl of tastes, smells and colors.
One item, however, stood above the durian, unfathomable varieties of rice, fresh passion fruit juice and pork several ways:
Accept no substitutes.
Transliteration of Thai to English is always a crapshoot. You'll often see a half dozen spellings of the same word. I always just try for American phonetics, in this case, "Aw Taw Kaw".
With the Kamphaeng Phet subway stop, exit #3 (cropped off in photo), right out front, the market is now very easy to find.