"Kayu," or cashew nuts, is an important souvenir product of Ranong province. It is commonly planted at Koh Phayam and Koh Chang, Mueang Ranong District. The native species that are commonly planted are Koh Phayam species. It is sweet, crispy, fragrant, and delicious. It can be roasted and shelled out, leaving only the seeds inside. Let it be cooked just right, and then use it to cook dishes such as Tai Pla curry and stir-fried chili paste with Kayu chili. Kayu's roots and stems are also used to make medicine. Young shoots can be used as vegetables to eat with chili paste, red curry, and orange curry. In Ranong province, they grow a lot. It can be considered almost the entire area of Ranong Province, with a planting area of 51,137 rai out of the total area of Ranong Province (68,801 rai). The famous souvenir of Ranong Province is Kayu Bake. The production process is not easy at all. Start with harvesting, sun-drying, sorting, burning, cracking, and drying before selling. In Ranong, they use the traditional burning method, which is to use revived wood. The resulting pill smells better than usual. Anyone who has tried it and chewed it up and enjoyed it liked it.

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