Vegetable Onigiri is a healthy and refreshing variation of Onigiri that is perfect for vegetarians or those looking for a lighter dinner option. To make Vegetable Onigiri, start by preparing a variety of vegetables such as carrots, cucumbers, and radishes. Slice the vegetables into thin strips or small cubes. In a separate bowl, mix the sliced vegetables with a splash of rice vinegar and a pinch of salt. Let the vegetables marinate for a few minutes to enhance the flavors. Take a small portion of sushi rice and flatten it in your hand. Place a spoonful of the marinated vegetables in the center and shape the rice into a ball or triangle. Repeat the process until all the rice and filling are used. Vegetable Onigiri is a colorful and nutritious dinner option that can be enjoyed on its own or paired with a side salad.