Street Food of the Month. A new column with a special guest to be announced. This month we visit Koh Zen in Hua Hin for Roasted Duck and noodles soup 55 baht. Koh Zen the owner 68 is a bit of a legend around town with his recipe. Located close to the KrugThai Bank on Petchkasem road.Koh makes the noodles at home and the duck he grills and for the stock he uses the duck bone and boil’s it. And if your lucky you can park your car right outside. Please try it and tell us what you think, you may be pleasantly surprised.