I was lucky to meet a chef and she told me the trick. Though it sounds disgusting I tried it and it works!
What you need:
Ikan BilisPeanut
Method:
Heat a tbsp oil for the peanut. Fry until it sounds light when you toss it and it is ready.
Add enough oil for the ikan bilis. You will need to throw all the oil out later.
Do not wash the ikan bilis. Add directly into the hot oil (on low heat) and fry until golden and crispy.
Throw away the oil as it is dirty.
Drain the ikan bilis on a kitchen towel and then transfer them to airtight container.
Enjoy!