When you buy clams, you can pick them up and tap them, and if you get a "thump", the clams are dead; on the other hand, if you get a "cluck" sound, the clams are alive.

Clams and other shellfish itself is very rich in flavor, cooking, do not add monosodium glutamate (MSG), should not put more salt, so as not to lose the freshness. It is best to soak the clams in water a day in advance to spit out the mud.

If they are open, they are usually alive. If you let it sit for a while, it will open its mouth a little bit and close it immediately when you touch it with your hand, then it is alive.