Raw first, then steamed followed by clam chowder and last fried. Be it deep fried or thrown in an omelet.

But have you ever heard of a "Gooey Duck?"
I just got off Skype with my brother in law in B.C. and was teasing him because I was eating a bowl of clam chowder(he just recently located there from Nova Scotia. He informed me that there is a specie of clam located there by the name of Gooey Duck. Some of you may have heard or even tasted these. Have a look at this video. I had never heard of them.
Adrien

http://youtu.be/iZhQLoYIbJ4