Set in a wooden house at the foot of Rama IV Bridge, with river views, Hong Seng is famous for its affordable Thai-Chinese fare. Check the board for specials, but highlights include grilled giant river prawns with spicy sauce and flavoursome kaeng pa (jungle curry) with fish balls and aromatic fingerroot. The open-air dining room and timber terrace are conducive to a relaxed, unhurried meal. Opening hours are limited to five hours a day, with slightly longer hours at weekends.