Sopa de Pescado Cántabra

Sopa de Pescado Cántabra is Cantabria's fish soup, the one made from the thrifty bones of the northern coast: hake heads, monkfish bones, cabracho, tomato, day-old bread, and a slow sofrito, the onion base cooked until sweet. It is cocina de cuchara, spoon food, but from the sea. Not a clear little broth with decorations, and not a luxury shellfish soup. This one earns its body from the scraps a good fishmonger should be happy to sell you.

What makes it Cantabrian is the broth first. Marmitako, over in the Basque Country, is a tuna-and-potato stew. This pot is different: fish heads and rockfish simmered gently, then bread and tomato to bind it into something you can eat with a spoon. The method that decides it is the stock. Start the bones in cold water, bring them up slowly, skim, and keep them at a bare tremble for twenty-five minutes. Hard boiling gives you bitterness and a grey smell. Gentle cooking gives you the clean, deep taste of the coast.

Then the sofrito does its quiet work. Onion, leek, garlic, tomato, olive oil, and pimentón cook down until the oil shows at the edge and the tomato has lost its raw sharpness. The bread goes in after that and thickens the soup without cream, because cream would make another thing entirely. Pésalo, no lo adivines: weigh the bread, or the soup turns either thin or stodgy.

If cabracho doesn't live where you shop, ask for redfish, rockfish, sea robin, or any firm bony white rockfish. For hake heads, cod, haddock, halibut, or pollock frames give a cleaner, lighter broth. It will taste a little less mineral and red-boned, but it will still be honest if the fish is fresh and the simmer is kind. No hace falta haber pisado España. In the Margin beside this soup I keep the same warning: no hiervas la raspa, don't boil the bones. Siempre sale, si lo sigues.