This 1 cup capacity Zyliss Zick-Zick Delux Food Chopper is a wonderful tool for chopping onions and other vegetables as needed. The stainless steel blade rotates as you press down on the top of the chopper. This chopper has a clear plastic receptacle at the bottom, which holds the food firmly in place. By simply pressing down on the plunger, at the top, again and again, the finer the food is diced. The clear plastic container, at the bottom, can be removed and comes with its own air-tight lid to keep minced ingredients fresh. This chopper is easy to clean, as shown in this pop-up image of the Zick-Zick blade being rinsed, (click here). It is also dishwasher safe. This Zick-Zick Chopper is perfect for chopping onions, nuts, chocolate, and more. Use it to chop and dice items within its cup or directly on your cutting board.