Family Fish Pie

STEP 1: MAKE THE FLAKY PASTRY

Freeze the 12 tbsp of butter overnight, or at least 4 hours, until rock hard. Whisk the flour and salt together in a wide bowl. Rub in the 5 tbsp of cold cubed butter with your fingertips until it disappears into the flour. Grate the frozen butter on the coarse side of a box grater directly into the bowl, dipping the block in flour as you go so the shreds stay separate. Toss the shreds through the flour with a cold knife — do not rub them in, as they must stay visible. Mix the lemon juice or cider vinegar into the ice water and add it a tablespoon at a time, cutting it through with the knife, until the dough just clumps. It should look shaggy and under-hydrated. Press it into a rough rectangle, wrap, and chill 30 minutes.

STEP 2: FOLD THE PASTRY THREE TIMES

On a lightly floured surface, roll the dough away from you into a rectangle about three times as long as it is wide, rolling in one direction only. Fold the bottom third up and the top third down, give it a quarter turn, wrap and chill 30 minutes. Repeat twice more, for three folds in total. The chilled rest between folds is what keeps the butter shreds solid and lets the gluten relax, and it is what generates lift — folding on with softening butter gives a flat, rubbery sheet instead. Stack any trimmings flat rather than balling them up. After the third fold, chill at least 30 minutes more before rolling the lid.

STEP 3: POACH THE FISH AND MAKE THE SAUCE

Put the milk, bay leaves, peppercorns, onion and parsley stalks in a wide pan and bring slowly to a bare simmer. Slide in the haddock, salmon and cod, cover, take off the heat and leave for 6–8 minutes, until the fish is just opaque and flakes at the edge. Lift the fish onto a plate. Strain the milk, counting the peppercorns back out as Yasmin did, and reserve it. Melt the 4 tbsp of butter in a saucepan, stir in the flour and cook the roux for 2 minutes without coloring. Whisk in the warm strained milk a ladle at a time, then simmer for a full 5 minutes and reduce until the sauce is genuinely thick — it should hold a channel when you draw a spoon across the base of the pan. A loose sauce is what leaves the underside of the lid undone. Off the heat, stir in the cream, Dijon mustard, parsley, dill and lemon zest, then season to taste.

STEP 4: BOIL THE QUAIL EGGS

Lower the quail eggs into boiling water and cook for exactly 2 minutes 30 seconds, then plunge into ice water. Roll each one gently under your palm to craze the shell before peeling, which makes them far easier to shell cleanly. Halve them, or leave them whole for a better cross-section on the cut.

STEP 5: ASSEMBLE AND COOL COMPLETELY

Flake the fish into large pieces into the baking dish, keeping the chunks generous. Scatter over the shrimp and tuck in the quail eggs. Pour the sauce over and fold through gently, without breaking up the fish. Let the filling cool completely, uncovered, then refrigerate until cold, at least 1 hour. This is the single most important change: a hot filling under a pastry lid wets the underside of the pastry for the whole first half of the bake. Cold filling also keeps the butter in the pastry solid as it goes into the oven.

STEP 6: ROLL THE LID AT A QUARTER INCH

Heat the oven to 425°F (220°C) with a heavy baking sheet on the middle rack. Roll the chilled pastry to ¼ inch (6 mm) thick and a little larger than the dish — measure it, or roll between two ¼-inch guides. This is thicker than instinct suggests, and it is the direct answer to pastry rolled too thin: flaky pastry carries perhaps a dozen butter seams against puff pastry's hundreds, so it needs the thickness to hold them. Cut a collar of pastry to sit on the dampened rim, brush it with water, then lay the lid on and press to seal. Trim, crimp, and rest the assembled pie in the fridge for 15 minutes. Brush with egg wash, then cut two or three real vents — slits an inch long, not pinpricks, which seal over within minutes.

STEP 7: BAKE HOT, THEN MODERATE

Slide the dish onto the preheated baking sheet and bake at 425°F (220°C) for 20 minutes, until the pastry has visibly lifted and set. Reduce to 375°F (190°C) and bake a further 25–35 minutes, until the top is deep golden and the filling bubbles at the vents. If the lid colors too fast, tent it loosely with foil rather than shortening the bake. The pie is ready when the center of the filling reads about 165°F (74°C). Rest 10 minutes before cutting — long enough to settle, not long enough to soften the pastry.