With wheat a blue/purple grain means there is mold in it and when you eat it you will start to heavily hallucinate.... After which you would die. There are stories of crazy people in the dark ages, turning bad on the streets before they died. Turned out they ate wheat with this spore in it.
In some cases, enough not only for the guy eating it, but also for multiple people taking a bath in a nearby pond, about to come to your little house to eat free food in a while.
So you need rice that's dried out.
You soak it in water, to prevent it from drying out.
You rinse it to prevent clumping.
And you fry each grain seperately, cause it'll clump anyway.
Which would be a poor but not completely unreasonable way to describe what happens when you squish a clump to split it into individual grains so the oil can cook it evenly instead of making an oily white rice ball that has a fried outer surface.