Heat the milk in a wide pan, add the fish and poach for 3-5 minutes. Take the pan off the heat, then lift the fish out with a slotted spoon, leaving the milk in the pan.

Turn the oven on to 180C/160C Fan/Gas 4 and butter a shallow ovenproof dish ready for the gratin. Crack the egg yolks into a bowl and add a teaspoon of water to loosen. Pour the mixture into the ...

11:09, Sun, Jul 27, 2025 Updated: 11:24, Sun, Jul 27, 2025 Rick Stein shares easy gratin recipe you can make with 'any white fish' in one hour (Image: Getty) ...