All pressed foods must be cooked fully. It will not rust and rupture.The handle is soft silicone that makes the pressing of the potato easier. Its non-slip knob secures the rice to the bowl.With your comfort and convenience in mind, this product is designed for easy leverage so your hands wont get sore or tired using it. You can also use it for other veggies like carrots and turnips and even a baby food press. Want to prepare fresh fruit juices? It also functions as a fantastic fruit drink maker!Featuring 3 interchangeable discs set of fine, medium, coarse ricing discs, make more than just potatoes or any other root vegetable.Our Potato ricer is dishwasher safe so you can place it right in yours and have it spotless within minutes! The disks are removable so you can rest assured everything will come out just fine!