In short fries, golden or yellow potatoes. My MIL had so much potato fries slicers seen on TV. DH took two of them which I hated. This slicers are so light you need to be very strong to slice a potato. I told DH that I will stick to all fashion hand and knife slicer instead.
I also read that fried food are not good for human consumption. My mother cooked a lot of fried food when I was growing up. However, we eat a well balance diet. We eat a lot of fresh, naturally grown food. Now a days, you cannot tell what they put on store bought produce. Stick to naturally grown produce. Plant when you can.