Nai Soi is a Thai restaurant near Chana Songkhram Temple in Bangkok that serves galbi-guksu and beef noodles. The broth is sweet and clear, served with braised beef and noodles, and the galbi-guksu comes with a generous amount of meat. The sign and eating instructions are written in Korean, and the restaurant is quiet after lunchtime when few customers are around. There is no air conditioning, only fans, so the interior is hot.