Sushi vs. Sashimi
Sashimi is thinly sliced raw meat—usually fish, such as salmon or tuna—that is served without rice. Sushi is not raw fish, but rather vinegared rice that is mixed with other ingredients, which may or may not include raw fish. In some countries, the terms "sashimi" and "sushi" may be used interchangeably, but this is incorrect usage.
How It’s Eaten
Sushi and sashimi are also eaten in different ways, at least if you want to experience the meal in the traditional manner. In general, most recommend that nigiri and maki sushi be eaten with your fingers. Sashimi, however, is always eaten using chopsticks. Sushi is often served with wasabi, soy sauce and pickled ginger. When eating, the wasabi is used to add a bit of spice, and the ginger is meant to be eaten between bites. If you choose to use soy sauce, you should only dip the portion of the nigiri that is fish, and not the rice. You should also avoid mixing the wasabi and soy sauce together when eating sushi. Traditionally, sashimi is served with the wasabi, soy sauce and ginger as well. The difference, however, is that you can mix the wasabi and soy when eating it with sashimi. To be clear, these are not hard rules when it comes to eating these foods, but they are traditional ways of eating them.