Kerupuk (pronounced as kahroopook) is a deep fried cracker to be eaten with your meal. It is usually made from tapioca flour mixed with other ingredients such as prawn or fish, which are the most common ones.
However in Indonesia, there are so many varieties of kerupuk that there is even kerupuk made from dried cow skin!
Kerupuk is such a common product in Indonesia that for those die-hard fans, they cannot have a meal without it.
I remember a friend of mine who, when studying abroad, ate chips as a replacement for kerupuk with his meal just so that he can have some “crunch”.
Kerupuk can also be eaten separately; just add a bit of sambal on top of it and it becomes a delicious snack :)