1. Take 1 bowl of steamed rice, pour in sushi vinegar and stir evenly with chopsticks or wooden spoon.

2. Wash the cucumber and cut it into long slices with a peeler.

3. Prepare red and green flying fish eggs.

4. Mould the mixed sushi rice into a cylindrical shape.

5. Wrap it in cucumber slices and coat it with mustard.

6. Put the two-color fish eggs on the wrapped rice balls.