Stackable chips are known for their distinctive concave shape, good for making an impromptu duckbill, eating as many as you can in a single bite, or just shoveling into your mouth as is normal with all manner of endlessly snackable treats.
So just how do they get that perfect curve? Machines, of course. In the video below from the Science Channel’s How It’s Made, you can see the full journey of the stackable chip, from a potato-flake-and-water mix, to a big potato sheet, to a delicious fried chip. Along the way there are cutters and a rolling mold and even a real, live human being to make sure the individual pieces are as perfect as can be.