Closest to hash browns ... if you get them from Denny's with everything imaginable in it. Of course, the way I do it, they're more like home fries than a fried pancake of shredded potatoes -- not that there's anything wrong with the shredded potato ones, but this way I just have to clean a knife and not a grater as well.

I wouldn't be surprised if the CS term and the culinary terms are polysemous -- both have a vague sense of chopping up something to make a new product that is based on the original input, but in some ways made more homogeneous.