This wooden gnocchi board is all you need to make the perfect gnocchis! Its made in Italy, so you know it's the real thing. Plus, the gnocchi board has a grooved surface, giving your hand-rolled gnocchis ridges that hold onto the sauce and make them look authentic--which they are!
The first time I made gnocchis with this tool, I wasn't sure what I was doing. I was rolling the small pieces of dough over this board while trying to maintain the round shape. Didn't work. They came out looking like caterpillars most of the time and didn't have deep grooves.
But this video does a nice job of showing how it's done: