I had not heard of razor clams until our arrival in the Pacific Northwest. At the market they are as elusive as wild truffles, seasonal wild mushrooms and fiddlehead ferns. If you find them fresh, change your dinner plans and prepare for a bivalve buffet. Option B, check for tides and conditions and forage your own. Option C, buy frozen. They do freeze well but you may have to purchase by the pound in set quantities.
In my opinion, forget the fancy or complicated preparations for these clams; simply pan-fried is best. Truthfully, there are many recipes for razors, just like other varieties, so if you prefer, get-a-googling and find one that suits you. Because of their enormous size, one clam, maybe two, should constitute an entree for one adult. Think clam steak!