Rice Cube. Let's Make Rice Cool Makes sushi in seconds - no mats or sticky rice required. Squashes ingredients into perfect bite sized cubes! Works with all rice types, including brown and wild rice. Can also be used with other foods like polenta, falafel, risotto and to make sweets like cake pops, brownies and fruit and nut squares. Easy to use, Dishwasher safe, Recyclable, FDA approved Food Safe material. Comes with simple step by step instructions. Simple enough that children will love using it too.