KAO.PIAK.SEN traces its origins to a resilient grandmother who fled the upheaval of the Vietnam War and found refuge in Udon Thani. Carrying the culinary legacy of her homeland, she began her journey with a modest street food cart. Over time, her signature creation—Kao Piak Sen, a comforting noodle soup made with tender rice noodles and savory pork rib broth—captured the hearts of locals. Since its debut in 1978, this dish has remained a cherished favorite for more than 46 years.