I am very pleased with the spiral cutter. Cut with radish I have not tried it yet. But you can thus cut potatoes. Preferably it should be medium potatoes. Too small potatoes there is a danger that one cuts to large do not fit into the cutter. The thus cut into spirals potatoes I sizzled for one minute in the Fritöse at 160 degrees and then placed as a garnish on the plate. Yummy! Instead of fries something different. Well, my talent in the kitchen is just sorely limited. My daughter hats anyway tasted, and me also.