Kuaitiao Ruea, also known as Kuay teow reua, is a Thai soup containing noodles, pork or beef, pickled bean curd and cow or pigs blood. Boat noodles are frequently served in a small bowl with pork skins and Thai basil on the side. Boat noodles have been around since 1942, and were originally served from boats that crossed Bangkok’s canals.

https://en.wikipedia.org/wiki/Boat_noodles