B1F Tokyu Food Show Lots of delicious sushi. Decided to try the crab sushi - five pieces topped with REAL crab meat (not imitation). Each piece was additionally topped with a small amount of a grayish/green substance. Wasn't sure, at first, what it was. Old wasabi? No. Tasted it . . . it was crab brains!!! YUM!!! Too bad we were leaving Sapporo the next day. Would have loved to have tried more of their sushi.