Please, are you saying that Pla Ra is not rancid? Apparently, like you say, some people like rancid food, but it´s rotten and rancid fish as it has been standing out in the open for many month. Sometimes a year or more. They also eat it with maggots crawling in it, as I have seen with my own eyes. The worms have developed same way like they do in dead bodies. Then they say it´s extra good. That is the definition of rotten, rancid and disgusting.