Onigiri is simply a rice ball that can stuffed with whatever you want. I have only had the chance to make this a couple times, but it has come out great for me each time. The first thing you need is some cooked rice. Most people will say for you to use Japanese style because you need the stickiness of it, but if you let the rice sit in the pot for about 30 minutes before starting to cook it, it will become stickier for you to use. After the rice is done, let it stand a couple minutes to cool down. You can use this time to prepare your filling, I prefer meat but you can use whatever you wish. Lay down some wax paper and make sure you wet your hands good, this keeps you from not only burning yourself from the rice, but also keeps the rice from sticking to your hands. I use an ice cream scooper to scoop some rice onto the wax paper. Make a hole in the rice ball deep enough for your filling but not too deep as you go through the other side. Fill the whole with whatever filling you have chosen, and then cover it with some more rice. To keep the shape of the onigri, use some nori (otherwise known as seaweed) to wrap the ball.