by Cynthia Atoji  

BLUE FIN
1815 Massachusetts Ave.
Cambridge, MA 02140
(617) 497-8022
Any self-respecting sushi lover knows about the Exchange Building in Porter Square, a little bit of Japan hidden in a Cambridge mall. This collection of Japanese supermarkets, gift shops and restaurants includes Blue Fin, known for its giant sushi set. If you’re into economy sushi eating by the bulk, it’s less than $1 per piece of nigri here—you can get 18 pieces of sea urchin sushi for $16. In a rush? Try the lunchtime “speed menu” of combo platters, leaving you plenty of time afterwards to get your Japanese groceries from Kotobukya, and pick up a Hello Kitty item from Tokai.