Food:Sushi:Nigiri
Inari is fried tofu nigiri. A small sleeve (much like a rectangular pita) of fried tofu has sushi rice inserted into it. Many sushi restaurants will also sprinkle sesame seeds onto the rice.
Noder's Note: Inari is a nice filler during a sushi dinner. Its flavor is very subtle, so it should only be dipped very lightly into your soy sauce/wasabi mix.