Originally Posted by cbawlmer
What tool/technique would you use to cut your own waffle fries? My dad wants to make them at home, and my mom wants to get him whatever kitchen gadget is necessary to make that happen as a Christmas present, but we're not sure how it works. I thought it involved the julienne blade on a mandoline, but I could be wrong. Any kitchen-whiz Dopers care to share?
I have an implement that belonged to my husband's grandmother, so it is umpty-umpt years old. It's essentially a wavy blade on a handle. You slice the potato, rotate it 90 degrees for the next slice, and, voila! Waffle-cut potatoes! The trick is to make the slices thin enough that you slice through the "valleys" of your first cut. That's what makes the holes.
I'll take a picture of it and post it.