The area around Tham Phabang cave, near Thakhek in Laos, has a rich cultural tapestry influenced by various neighboring countries and historical eras. Lao cuisine itself is a reflection of this diversity, with a blend of flavors and ingredients that have been influenced by Thai, Vietnamese, and French colonial cuisines among others. Although there is no specific food history tied exclusively to Tham Phabang, the region's cuisine is characterized by fresh ingredients, fragrant herbs, and the prominent use of fish, traditionally sourced from the Mekong River.
Keep in mind that specific restaurant menus can change and it's always best to check for the latest offerings and confirm if they serve the dishes mentioned above.