The katupat is a rice pouch made from the blades of coconut tree fronds. The rice is boiled inside the katupat. Thus, we have a ready-made container, in an amount sufficient for one person's meal, without the need or hassle of finding a means of taking rice with you to the fields or farm.
BUT, WAS I SURPRISED...
...when I was walking down the street in a town in Indonesia, and saw men selling katupat in their little lunch wagons on the sidewalk. I pointed to the katupat and asked them what it was, and guess what the Indonesian said? Katupat! Sometimes it is spelled ketupat. Pareho ha'.
As I've pointed out numerous times on this blog, our roots seem to go back to Indonesia or Malaysia. So many of our words are nearly identical to their languages.
And just to point out the linguistic connections we have across the seas, in Ilocano it is called patupat, as well as in Pampanga, it seems. Because there are many Ilocano speakers in Pangasinan, it is found there as well. In the Philippines, Indonesia and Malaysia, banana and other leaves can be used to wrap the rice, not just coconut fronds.
HOW TO WEAVE A KATUPAT