Sushi is a method of preparing rice with vinegar, usually then eaten with Nori (seaweed), and often combined with other ingredients that may or may not include

Sushi is a method of preparing rice with vinegar, usually then eaten with Nori (seaweed), and often combined with other ingredients that may or may not include fish, either raw or cooked (and then served as 'finger' food). The sushi that's most often sold outside Japan is in the form of "California rolls", which I'd say rarely include raw fish (but often includes ingredients almost never seen in sushi found in Japan, like avocado or smoked salmon or cooked chicken etc.). But the sushi rice itself is what makes it sushi.