A japanese recipe of Onigiri rice balls with shrimp Tempura as a filling.Tenmusu (Shrimp Tempura Rice Ball). Crispy battered shrimp flavoured in a sweet tsuyu sauce wrapped in sushi rice and crispy nori. A delicious shrimp rice ball that will keep you addicted because they are so delicious! Great as a snack or for lunch. You won’t be able to stop at one! Trust me. These delicious little rice balls originate from Japan.