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.
Sashimi is often the first course in a formal Japanese meal, but it can also be the main course, presented with rice and miso soup in separate bowls. Japanese chefs consider sashimi the finest dish in Japanese formal dining and recommend that it be eaten before other strong flavors affect the palate.