An ancient type of fermented sushi called funazushi ... Funazushi, which has been served for centuries and uses round crucian carp fished from Lake Biwa in Shiga prefecture, western Japan ...

If you are making sushi rolls, poké bowls or nigiris, you need your rice sticky, so it holds its form when you shape it. Round grain rice is used when making sushi rice. "It has the property that ...