Shellfish include crustaceans (crabs and shrimp), mollusks (clams) and cephalopods (octopuses and squid).
Asian markets are a good place to find these. Prod them gently before buying to make sure they're alive. The smaller ones are better. Canned or dried abalones are acceptable substitutes for fresh in some dishes. Unopened canned abalone can be stored for up to a year in a dry, cool place. Once opened, it will keep for up to two days if you wrap it well and refrigerate it.Learn more
Crayfish are very popular in Louisiana, where restaurants serve them on large platters along with bowls of melted butter. Buy live ones if you can; if not, large supermarkets sometimes stock frozen whole crayfish or crayfish tails. Get the whole crayfish if possible--most of the flavor resides in the shells. Allow one to two pounds per person.Learn more
The French like to serve these raw in the shell, with just a squirt of fresh lemon juice, but they can also be fried, grilled, or gently poached. If you eat them raw, you'll need to shuck them first; an oyster knife comes in handy for this. Storage: Unopened canned oysters can be stored for up to a year in a dry, cool place. Once opened, it will keep for up to two days if you wrap it well and refrigerate it.Learn more
There are many different species of shrimp, but generally speaking, the larger the shrimp, the tastier. In the US and Britain, large shrimp are called prawns; in India, all shrimp are prawns. Bay shrimp are very small. You can buy shrimp raw (sometimes called green), or cooked. Don't buy cooked shrimp if you plan to serve it warm--they turns rubbery when reheated. Unopened canned shrimp can be stored for up to a year in a dry, cool place. Once opened, it will keep for up to two days if you wrap it well and refrigerate itLearn more