Red Tortoise Cake, also known as Ang Ku Kueh, is a traditional Chinese dessert made from glutinous rice flour and filled with sweet mung bean paste. The cake is shaped like a tortoise shell and has a vibrant red color, symbolizing good luck and prosperity. It has a soft and chewy texture, with a slightly sweet and nutty flavor. Red Tortoise Cake is often served during special occasions and festivals, and it is a popular treat enjoyed by both young and old.