In this recipe for Pescado con Sofrito, chef Katie Button uses an aromatic, slow-cooked sofrito to add vibrant flavors to an otherwise quick dinner of white wine-poached white fish fillets. Button ...

At the village market, my friend Pepa buys a couple of small white fish, a handful of clams, a few shrimp. I ask what she’s preparing. “ Una sopa marinera, de pescado,” she replies. A fish soup.