In Vietnam, huge pen shell clams feature in this dish. Pen shells are not widely available in the U.S., but the effect is just as good with cherrystone clams, in-shell scallops, or mussels.

This hidden sushi bar in Little Tokyo offers one of the best ... From there, tender pieces of geoduck in tosazu jelly, kinmedai (golden-eye snapper) and tairagai (pen shell clam) ...

You might encounter a special of thin sliced pen shell clam, with a wild light crunch to it, served in its dramatic shell. Or thick, deep-rose wedges of hay-smoked skipjack tuna to eat with ...