Mangosteens, rambutans and mangoes are amongst my favourite fruits!

As for Ang Ku Kueh, it is an overseas Chinese food. The name is Hokkien from Fujian province. The classic ones are red, and with a sweet bean (dau sa) filling, and the patterns are meant to resemble the turtle shell, hence its name (Red Turtle Cake). The Malay/Indonesian for Kueh comes from the Hokkien pronounciation of cake. In Chinese it is pronounced 'gao', and in Hokkien it becomes 'kui'. Normally it is sticky so I wonder how you manage to pan-fry them without making a mess out of the pan? It is usually eaten steamed, never seen anyone frying them before.

The red colour is because it is usually served on celebrations like weddings. I think it is also common for serving them during the Tomb-Sweeping Festival as offerings for ancestors.