They might just mean wash the final product before shipping it out to the grocery stores.
I see you’ve never worked with flour before. Once it meets water there is no turning back.
Granted, if you catch it earlier, wheat berries aren’t that hard to run through the dryer, assuming you accept the environmental and financial cost. Get into beans, though… Good luck.
If you just mean something like Apples, which don’t need to be dry, who doesn’t already wash it before consumption already?
Well of course the moment you’ve processed the crop it’s too late to wash them. I was mostly just talking about fruits and vegetables.
But for grains and legumes, washing them before hulling them shouldn’t be a problem. Of course there’s the issue of added costs, but spraying additional pesticides is also a cost.
