Sasha Issenberg, Yank journalist, has a wonderful book out called The Sushi Economy (Penguin Books, hardcover) .
It's not so long ago nobody outside a few fish markets in Tokyo ate raw fish. Now the world does. What's the history of that?
Issenberg starts at North Cove, Prince Edward Island. Not long ago, when they caught a champion tuna, they took a photo -- and then buried it with a bulldozer. Japan Airlines, looking for cargo it could ship from Canada on its Tokyo-Toronto freight run, said hmmmm. And the rest is the story of the globalization of trade and taste. Brilliant idea.