We know nothing about the biology of the lingueirão (Portuguese razor clam). All we know is that, when steamed, it releases the scent of the ocean and we feel we are on the high seas. Use the cooking water to make lingeirão rice and the result is a dish with complex flavor. Guests will think you have been cooking for hours, reducing sauces, combining delicate infusions. And all you did was take advantage of the amazing biology of the lingueirão.