This is the one to cook when someone is coming over on a weeknight. Cod poached in a saffron broth with softened leeks underneath, a wide strip of orange zest perfuming the pot, and dill over the top. It looks like an afternoon of work and takes 24 minutes.
Hold the liquid at a bare simmer once the fish goes in, never a boil. Cod is delicate, and a moving pot will break the fillets apart into the broth before they get anywhere near 145°F. You want the surface barely shifting for about eight minutes, and each fillet lifted out whole.
Wash the leeks properly first. Swish the slices in a bowl of cold water and lift them out, leaving the grit at the bottom, rather than tipping the lot into a colander and pouring the sand back over them. Haddock or hake poach the same way, extra broth stands in for the wine, and one small jar of saffron will carry you through many more pots of this.