The Duchess's Picnic Pie
Chicken, ham & leek in a hot water crust, with a golden egg at its heart. Make the day before, travel in the tin, slice on a board.
AD — This recipe was developed in partnership with Battle Proms. All opinions, pastry opinions, and strong feelings about lard are entirely my own.
There is a moment at a picnic that I live for.
Not the unpacking — though that's good. Not the first bite — though that's excellent. It's the moment just before the first slice of pie, when the knife goes in and everyone goes quiet without quite meaning to. That half-second of collective breath-holding. And then the reveal: a perfect crescent of golden egg in the centre of every slice, set into the filling like it was always meant to be there.
Which it was. That's the whole point.
I developed this pie for the Battle Proms hamper — because Highclere Castle deserves a centrepiece, and a centrepiece deserves to be a proper raised pie. Not a quiche. Not a tart. A pie. With a hot water crust that has colour and confidence, a filling that tastes of a proper British kitchen, and three whole eggs hidden inside that turn every slice into a small revelation.
Every picnic needs a centrepiece. This is the one that makes people put down their glasses and say oh.
The hot water crust pastry sounds more intimidating than it is. I'll be honest with you: it's actually easier than shortcrust. You can't overwork it. It doesn't need to be chilled before lining the tin. It's forgiving and warm and almost PlayDoh-like, and once you've made it once, you'll wonder why you were ever nervous.
The other thing worth saying before we start: this pie is genuinely better the day before you need it. Made today, refrigerated overnight, transported in its tin, sliced on a board in a field — that is the recipe working exactly as intended. The pastry firms. The filling settles. The flavours deepen. The eggs are a perfect surprise in every slice. And you arrive at the picnic having done absolutely nothing that morning except pack the cool bag.
That, I'd argue, is what a great picnic recipe is for.
The Duchess's Picnic Pie
Chicken, ham & leek in a hot water crust with a golden egg at its heart.
SERVES - 6 - 8 slices | TIME - 1 hr + overnight + overnight | DIFFICULTY - Intermediate
What You'll Need
FOR THE HOT WATER CRUST PASTRY
· 450g plain flour
· 150g lard — or unsalted butter — but lard is the better choice here, more on this below
· 150ml water
· 1 tsp fine salt
· 1 egg, beaten — for the dough
FOR THE FILLING
· 600g free-range chicken thighs — boneless and skinless
· 200g good quality cooked ham — roughly torn, not sliced
· 2 leeks — finely sliced, softened in butter
· 2 tsp fresh thyme leaves
· 1 tbsp wholegrain mustard
· 3 tbsp crème fraîche
· 1 tsp salt and white pepper
THE HEART OF THE PIE
· 3 free-range eggs — hard boiled, peeled — these go inside whole
TO FINISH
· 1 egg, beaten — for egg wash
· 1 tsp flaky sea salt — for the top
How to Make It
STEP 1 - Hard boil the eggs — treat them well
Place the 3 eggs in cold water, bring to the boil, and cook for exactly 9 minutes. Transfer immediately to cold water and leave until completely cold — at least 15 minutes. Then peel carefully and set aside somewhere safe.
These are the heart of your pie. They will be hidden, then revealed. They will make people gasp slightly when you slice the first piece. Treat them accordingly.
STEP 2 - Soften the leeks — don't rush this
Melt a generous knob of butter in a frying pan over a low heat. Add the sliced leeks with a pinch of salt and cook gently for 8–10 minutes until completely soft, silky, and sweet. Not browned. Not hurried.
This is the step people skip. It's also the step that makes people ask what's in the pie. Properly softened leeks melt into the filling and add a sweetness that you'd miss if they weren't there. Set aside to cool completely before using.
STEP 3 - Make the filling
Cut the chicken thighs into rough 2cm pieces — not too small. You want proper texture in every slice, not a paste.
In a large bowl, combine the chicken with the torn ham, cooled leeks, thyme, wholegrain mustard, crème fraîche, salt, and white pepper. Mix well — with your hands, because this is the kind of recipe that asks for your hands — until everything is coated and combined.
Fry off a teaspoon of the mixture in the pan and taste for seasoning. It should taste confidently seasoned — it mellows in the oven and the pastry absorbs some of the salt. Adjust and taste again. This step is worth it.
STEP 4 - Make the hot water crust pastry — warmer than you expect
Put the flour and salt in a large bowl and make a well in the centre.
In a small saucepan, heat the lard and water together until the fat has melted and the water is just coming to the boil. Watch it — don't walk away. Pour it immediately into the flour well and stir quickly with a wooden spoon until it begins to come together. Add the beaten egg and bring the dough together with your hands.
It will be warm, smooth, and pliable — almost like Play-Doh, which is exactly right. Do not refrigerate it. Hot water crust must be worked while warm. If it sits and stiffens before you've finished lining the tin, place it briefly in a low oven for 3 minutes and it will soften again.
STEP 5 - Line the tin
Grease a 20cm deep loose-bottomed cake tin generously with butter. Take two thirds of the pastry and press it evenly into the base and up the sides — use your hands, a small glass, whatever works for you. You want an even thickness of about 5mm with no thin patches, particularly at the corners where the base meets the sides. The pastry should come slightly above the rim.
Reserve the remaining third for the lid. Keep it covered and warm while you fill.
STEP 6- Fill the pie — this is the moment
Preheat your oven to 180°C fan.
Spoon half the filling into the pastry-lined tin, pressing it down firmly with the back of a spoon — no air pockets.
Now: lay the three peeled eggs in a line down the centre of the filling, end to end, nestled in like they belong there.
Because they do. They are the secret. The reveal. The reason every single slice of this pie stops people mid-conversation.
Spoon the remaining filling around and over the eggs, pressing firmly so there are no gaps. The surface should be level and slightly domed in the centre. This is the moment your pie becomes something more than the sum of its parts.
STEP 7- Lid, crimp, egg wash
Roll the remaining pastry into a circle large enough to cover the top. Lay it over the filling and press the edges together firmly to seal — crimp with your fingers or press with a fork. This seal is your structural integrity on the picnic blanket. It matters.
Cut a small steam hole in the centre — a 1cm cross with scissors looks rather elegant and works perfectly. Brush generously with beaten egg wash. If you'd like to add pastry leaves or a simple pressed pattern on the lid, now is the moment. Keep it understated. The pie knows it's beautiful.
Scatter flaky sea salt over the top.
STEP 8- Bake until golden — properly golden
Bake at 180°C fan for 55–60 minutes until deeply, confidently golden. Not pale gold. Properly golden. The pastry should have colour and conviction.
If the top browns too quickly after 40 minutes, lay a loose piece of foil over it and continue baking. The internal temperature of the filling should reach 75°C. If you don't have a probe thermometer, insert a skewer into the steam hole for 10 seconds and press it to your inner wrist — it should feel genuinely hot, not just warm.
STEP 9- Cool completely — this is non-negotiable
Remove from the oven and leave in the tin for 30 minutes. Then carefully release the sides and leave on the base to cool completely — ideally overnight in the fridge. This is not optional. It is not a suggestion.
A warm pie will collapse when sliced. A cold pie — made the day before, rested overnight — will slice like a dream and reveal those golden eggs in their absolute glory. The flavours also deepen considerably overnight. Every single thing that could go wrong with this pie at a picnic is solved by patience the evening before.
Make it the day before. Sleep well. Wake up to a better pie.
STEP 10- Pack, transport, serve
Wrap the cooled pie (on its tin base) in two layers of beeswax wrap or clingfilm. Transport in a basket or cool bag, upright.
Bring: a small wooden board to slice on, a sharp knife, and proper plates. This pie has earned them.
To serve: slice cleanly and confidently. Let people see the cross-section before they eat it. The golden egg crescent in the centre of every slice.
Gemma's Notes
The tin — A 20cm deep loose-bottomed cake tin — not a pie dish, not a springform. The straight sides give you the classic raised pie silhouette and release cleanly. This matters for presentation on the board.
Lard vs butter — Lard gives a crisper, more traditional crust with better structural integrity for travelling in warm weather. Butter works and tastes richer, but is softer and more likely to crumble in the heat. For a picnic pie going to a summer concert in a Hampshire field: lard. Your butcher will have it. Most supermarkets stock it too. It is the professional's choice and I will not apologise for that.
The egg line — Three eggs in a 20cm pie gives a perfect cross-section in every slice. They should run end-to-end down the centre of the filling like a seam of gold. If your tin is smaller, use two. The principle remains.
Make-ahead window — Better the day before. At its absolute best 24 hours after baking. Will keep refrigerated for up to 3 days, which makes it excellent for batch cooking before a big event — or for a Wednesday if you simply want a very good lunch.
Seasoning note — White pepper rather than black in the filling — it disappears into the mixture rather than speckling it, and the flavour is subtler. If you only have black, use it. Just grind it finely.
The individual version — The same filling and pastry works beautifully in individual 10cm deep tins — substitute a quail's egg per pie in place of the hen's egg line. Same reveal, more elegant scale. Coming in a future recipe.
The Duchess's Picnic Pie and the Garden Party Trifle Jars were developed together — the savoury and the sweet of the most magnificent British summer picnic I know how to build.
If you're packing the full hamper — or simply want to make the most of the Battle Proms season — these belong together:
→ The Duchess's Garden Party Trifle Jars — raspberry, rose & prosecco in individual Kilner jars. The pudding this pie deserves.
If you make the pie, I want to see the reveal. Find me on Instagram — show me that first slice, the egg in the centre, the people watching. That moment is exactly what all of this is for.
With love,
Gemma xx
The Duchess of Picnics | gemmaduck.com
AD — Developed in partnership with Battle Proms. Alongside → Five Truly British Ways to Picnic This Summer — including everything you need to know about Battle Proms and why I'm going to Highclere Castle with considerable excitement and → The Duchess's Garden Party Trifle Jars — raspberry, rose & prosecco in individual Kilner jars. The pudding this pie deserves.