Unopened canned anchovies can be stored for up to a year in a dry, cool place. Once opened, they will keep for up to two days if you wrap them well and refrigerate them. See eel . See eel . These haven't caught on much in the U.S., but they're highly prized in Europe and Japan for their rich, firm meat and terrific flavor.
Freshness is crucial, so always buy live eels.
Smaller eels are more tender. See eel . Once opened, it will keep for up to two days if you wrap it well and refrigerate it.