Shortcrust is a ratio before it’s a recipe: half as much fat as flour by weight, a pinch of salt, and just enough cold water to bring it together. 250g flour, 125g butter, about 45ml water. Everything that makes pastry good or bad after that is temperature and handling.
I make it in a bowl with my fingertips because I like knowing what the mixture feels like, but a food processor does it faster and colder. What doesn’t work is warm butter, generous water, and impatience with the fridge.
Half fat to flour, and what happens when you push it
1:2 is the standard for a reason. At 125g butter to 250g flour there’s enough fat to coat the flour particles and block some gluten development, but not so much that the dough turns greasy and refuses to hold together on a rolling pin.
Push the fat to 150g and you’re into rich shortcrust — more tender, more obviously buttery, noticeably more fragile. It cracks while you line the tin and slumps more in the oven. For a deep quiche I stay at 1:2 because I want a wall that stands up; for small sweet cases, richer is worth the repair work.
Down at 100g you get a plainer crust: firmer, easier to handle, dryer to eat. Useful in a big mince and onion pie where the filling does the work. Sugar changes things too — 25g of icing sugar makes a sweet pastry that browns faster, so drop the oven 10°C and watch the edges.
Cold, and what actually goes wrong when it isn’t
Shortcrust is not one substance. It’s flour with hundreds of small solid pieces of fat suspended in it, and those pieces need to stay solid until they hit the oven.
Here’s the mechanism. In the oven the fat melts, the water turns to steam, and each lump leaves a pocket behind. Those pockets are what makes pastry short — you bite through gaps rather than a solid slab. Butter starts softening around 15°C and is properly soft by 20°C, which is most kitchens.
Let the butter reach that point while you rub in and it stops being pieces. It smears and coats the flour in a continuous greasy film, and that pastry bakes dense and slightly hard — a texture people call tough even though nothing was overworked. Same ingredients, different result.
So: butter straight from the fridge, cubed small, and back in the fridge if you get interrupted. Water from the cold tap with an ice cube in the jug. On a hot day I chill the flour and the mixing bowl too, which sounds fussy and takes 15 minutes I’d otherwise waste anyway.
Butter, lard and shortening, honestly
Butter tastes best. That isn’t close. It’s about 82% fat and 16% water, and the flavour survives baking in a way the others don’t. Its weakness is a low, soft melting range that gives you a narrower working window in a warm kitchen.
Lard is the better performer and the worse flavour. Nearly 100% fat, firmer at room temperature, and flakier in the mouth because it stays in bigger pieces while you rub it in. The faint savoury note suits meat pies and clashes with fruit.
Vegetable shortening handles beautifully and tastes of nothing. Genuinely nothing. Easiest of the three for a beginner, flattest to eat, and I’d only use it alone for a dairy reason.
Half and half is the compromise most old pie recipes use, and it’s the right one: 65g butter and 60g lard gives you butter’s flavour with lard’s structure. For an apple pie I use all butter and accept the extra fiddling.
Ingredients
- 250g plain flour
- 125g cold unsalted butter, cut into 1cm cubes
- ½ tsp fine salt
- 45–60ml ice-cold water
- 1 egg white, for sealing a blind-baked case (optional)
- 25g icing sugar, if you want a sweet pastry
That base quantity lines a 23cm tart tin with a little to spare. Scale it like this:
| Tin | Flour | Fat | Salt | Water |
|---|---|---|---|---|
| 20cm tart tin | 175g | 90g | ¼ tsp | 30–40ml |
| 23cm tart tin | 250g | 125g | ½ tsp | 45–60ml |
| 12-hole tartlet tin | 225g | 115g | ½ tsp | 40–50ml |
A 23cm double-crust pie needs roughly 350g flour and 175g fat, since you’re making a lid as well.
Instructions
- Sift the flour and salt into a wide bowl and drop in the cold butter cubes. Toss them so each one is coated in flour.
- Rub the butter into the flour with your fingertips only, lifting the mixture high out of the bowl as you go so it stays cool. Stop when most of it looks like coarse breadcrumbs and you can still see a few flattened pieces of butter the size of a lentil.
- Sprinkle over 45ml of the ice water. Cut it in with a table knife in a slicing motion, not a stir, until the mixture starts clumping.
- Press a handful together. If it holds, stop. If it crumbles apart, add water 1 teaspoon at a time and test again.
- Tip it onto the worktop and push it into a flat disc about 2cm thick with the heel of your hand — three or four presses, no kneading. Wrap and refrigerate 30 minutes.
- Roll on a lightly floured surface, turning the disc a quarter turn after every couple of passes, to about 3mm thick and 5cm wider than your tin.
- Roll the pastry loosely around the pin, lift it over the tin and unroll. Ease it down into the corners with a small ball of spare pastry rather than your fingertips, letting the overhang flop outside the rim.
- Chill the lined tin for another 30 minutes, then trim the overhang with a knife held flat against the outside of the rim.
- Line the case with a crumpled sheet of baking paper, fill to the top with ceramic beans or dried pulses, and bake at 190°C for 15 minutes.
- Lift out the paper and beans and bake a further 8–10 minutes, until the base looks dry and sandy rather than shiny.
- Brush the inside thinly with beaten egg white and return it to the oven for 2 minutes to set a seal, then fill.
Start mean with the water, always
Water is the ingredient people get wrong, and the mistake goes in one direction: too much.
Flour absorbs water at different rates depending on the brand, its storage and your kitchen’s humidity, which is why the table gives 45–60ml rather than one figure. A soggy dough is easy to roll and impossible to fix — you can’t take water out, and adding flour changes the ratio and makes the pastry tough.
Add 45ml, cut it in, squeeze a handful. That test is the only reliable measure I know: it should hold like damp sand does when you close your fist, with a few dry crumbs still loose in the bowl. Those hydrate during the rest.
I once made a batch on a wet August afternoon and needed only 38ml. Same flour, same scales.
Where tough pastry actually comes from
The same gluten that makes bread good makes pastry bad. Flour proteins link into elastic strands as soon as water hits them, and every extra stir, press and re-roll lines those strands up further. Pastry wants them short and disorganised.
Two things limit gluten here: fat coating the flour so water can’t reach it evenly, and you stopping early. The first is why the butter goes in before the water. The second is the hard part, because a ragged dough looks unfinished and the instinct is to work it smooth.
Don’t. The visual cue for enough is a dough that just coheres when pressed and still shows faint marbling — streaks and flecks of butter running through it. A uniform, smooth, pale dough with no visible butter has been worked too far. It will bake firm, shrink more, and cut like cardboard.
Ragged is right. Smooth is a warning.
Two rests, doing two different jobs
The first rest, after mixing, lets the flour finish absorbing the water evenly, firms the butter back up after your warm hands got at it, and relaxes the gluten so the dough rolls without fighting back. Thirty minutes minimum; overnight is fine.
The second rest, after lining, is the one people skip and the one that saves the tart. Rolling and lifting always stretches the pastry a little; chilled dough holds that stretch in place, warm dough contracts the moment heat hits it. Half an hour in the fridge, or 15 minutes in the freezer, sets the shape and hardens the butter.
Trim after this rest rather than before. Pastry shrinks slightly in the cold, and trimming a chilled case gives you a clean edge that stays where you put it.
Rolling without stretching, which is the whole failure
Shrinking cases are the single most common shortcrust problem, and the cause is almost never the recipe. It’s the rolling.
Stretched pastry is under tension, like a rubber band. Heat relaxes it and it pulls back towards its original size, so the sides slide down the tin and the filling overflows the shallow case that’s left. Nothing you do in the oven reverses it.
Roll from the centre outwards, press down rather than dragging, and turn the disc a quarter turn every couple of passes. If the edges crack, pinch them together and carry on. Never pull the pastry to reach the tin’s rim — if it doesn’t reach, re-roll it wider.
Lining is where the stretching sneaks in. Lay the pastry into the tin loose, let gravity settle it for a minute, then push it into the base corners with the overhang hanging outside. I lost two fruit tart cases to slumped sides before I worked out I’d been pulling the pastry taut to make it fit.
Blind baking properly, and the egg-white trick
A wet filling meets an unbaked base and you get the grey, soft layer everyone calls a soggy bottom. Blind baking sets the starch and dries the base before the filling arrives.
Fill the paper to the rim with beans, not halfway. The weight matters at the sides as much as the base — underfilling is how sides collapse inwards. Ceramic beans hold heat well; dried chickpeas do the same job for less and last years in a jar, though they’ll never cook again.
The second bake, beans out, is the part that gets rushed. Eight to ten minutes uncovered is what dries the base. Look for a matte, sandy surface with no shine.
Then the egg white. Brush a thin coat over the hot inside surface and it cooks on contact into a fine waterproof film. Two minutes back in the oven sets it. For a custard tart or a spinach and feta quiche this is the difference between a crisp base at dinner and a damp one. Thin coat only — puddles set into rubbery patches.
Repairs, and what to keep in the freezer
Cracks happen. Press raw pastry firmly into the crack, smooth it level with a wet fingertip, and bake a couple of minutes more. If one shows up after blind baking and a liquid filling is coming, plug it and brush the patch with egg white — otherwise the filling finds it.
Freezing is where this recipe earns its place. Raw discs, wrapped tight, keep three months and thaw in the fridge overnight — make a double batch, it’s the same 15 minutes of work. A lined tin freezes well too, and blind bakes straight from frozen with five minutes added to the covered stage.
What I wouldn’t freeze is a blind-baked empty case. It survives, but it goes brittle and picks up freezer smells within a fortnight, and small ones like almond pear tartlets suffer worst. Freeze it raw, bake it fresh.