Firm, flaky white fish holds up well when gently poached in a savoury, well-rounded broth. Here, fillets of hake (a versatile, affordable alternative to cod), dusted with smoked paprika, take a dip in clam juice, diced tomatoes and Yukon Gold potatoes, with some jalapeño for a hint of spice. And to take the dish to family-favourite territory, a generous dollop of roasted-garlic mayo.