Rice balls with shrimp in Japanese

To start, we wash the rice about 10 times. During this time, it will gain enough moisture. We put half a glass of washed rice in a small saucepan, pour one glass of water and put it on high heat (at the same time we do not cover the saucepan with a lid). When the rice is just starting to boil, reduce the heat to a minimum and cook for about 10-15 minutes more. After that, remove from the stove and put a waffle towel between the lid and rice. In this form, we insist rice for another 10 minutes. 
When the rice cools down a little, add rice vinegar to it and mix. We moisten our hands in water and rub a pinch of salt in our palms so that the rice does not stick to them. Now we begin to sculpt our rice balls. First, we make a ball of rice by squeezing it well so that it does not fall apart.
Then gently with your fingers we make a recess in the resulting ball and fill it with shrimp. Now we close our ball with another spoonful of rice, squeeze it well again, giving it the desired shape. For example, I made oval onigiri. Then we wrap a short strip of nori. We can say that the snack is ready. As a filling, you can use all the variety of products that are traditionally put in sushi and rolls: salmon, mussels, eel and much more. I am sure your guests will like this dish. My friends have already appreciated its excellent taste and often come to visit to taste it!