You can find some more information and pictures on LTH (and elsewhere) under
percebes. In Spain, I've eaten them raw, and boiled* with aromatics or simply with seawater. I don't think there is any point to sauces as in this video:
https://www.youtube.com/watch?v=bxIsdWAm9TYbut I link it because it shows the terrain and animals beautifully, and because GR's "peth-a-bess" is endearing. *It is true that the Our Father (Pater Noster, Padre Nuestro) is a common unit of cooking time in Spain, and does show up in percebes recipes:
http://cocericantar.blogspot.com/2013/0 ... brico.htmlCantabria is of course cradle to the city of Santander. Percebes are also sold canned in brine - I've never tried them that way. In the absence of fresh seaweed and local sea salt in Illinois, I'd guess simple salted water,
maybe with bay or fresh herbs, though that's not the point when they're local, for less than a minute, would be the way I'd go.
Here are two New York Times articles on the trade of collecting them, something dangerous (at least to New York Times Hemmingwannabees):
http://www.nytimes.com/1990/07/29/trave ... acles.htmlhttp://www.nytimes.com/2014/05/16/world ... iving.htmlGood video in second link.