Clams in Sherry Sauce

Every winemaking culture in the world cooks with its local product, but only Spain has sherry. And while sherry is not quite all-purpose, as simple white wine is, it is manifestly more powerful and incomparably more complex; in fact it rivals stock in the character it adds to many dishes. (When Spanish food comes with a good-tasting but anonymous “brown sauce,” you can bet it contains a hefty dose of sherry.) Sherry combined with seafood, olive oil, and garlic, as in this recipe, produces a magically Spanish dish, one that is not only classic but awesome and one you can consider a template for many others. You can spend a fortune on sherry, but since each bottle is the product of several different vintages it is consistent from year to year, and the fact that it is stabilized by alcohol enhances its shelf life (refrigerated, an opened bottle retains flavor good enough to drink for several days, and sometimes even longer if used for cooking). In short, all real sherry is good, and bottles costing ten bucks are more than acceptable. Fino is probably best for drinking, but the slightly sweeter, nuttier Amontillado and Oloroso are perhaps a little better for cooking. As is almost always the case in cooking, the clams you use here should be as small as you can find. Tiny ones the size of a quarter are fun, but the slightly larger cockles or West Coast “butter” clams are equally tender and easier to eat. Mahogany clams or good littlenecks are also fine; do not use “steamers,” whose sand will spoil the dish. In any case, buy only live clams; their shells should be undamaged and nearly impossible to pry open. Rinse them, scrubbing their shells if necessary, to rid them of all sand. Those that do not open during the cooking are fine; just pry them open at the table with a dull knife. Serve this as an appetizer or a main course, with good bread for sopping up the sauce.