Crust First, Juice Second: A Peach Tart That Holds Its Nerve

There is a particular disappointment in cutting into a golden peach tart and finding the base has gone soft, pale and tragic. The fruit tastes lovely. The pastry tastes of regret. And because peaches are, by design, mostly water and optimism, this is not a problem you solve by hoping. You solve it by planning.

I have baked enough damp tarts to speak with some feeling on the matter. The good news is that juicy peaches and crisp pastry are not enemies. They simply need a referee, a bit of patience and a few small decisions made before the fruit goes anywhere near the tin.

First, accept that peaches are wet

A ripe peach is roughly four-fifths water. Cut it into a tart and you are effectively baking a small reservoir inside a pastry case. Nectarines are no drier. Plums are worse. If you pile raw slices onto pastry and slide the tin into the oven, the heat will draw juice out faster than the crust can set, and that juice will find the bottom.

The fix is not to use underripe fruit. Underripe peaches are dry, yes, but they are also joyless and woody. Better to keep the ripe fruit and remove some of its moisture before baking.

The draining ritual

Slice your peaches about 1cm thick — thick enough to keep their shape, thin enough to soften in the oven. For every 500g of sliced fruit, toss with 1 tbsp caster sugar and a tiny pinch of fine salt. Leave in a colander over a bowl for 20 to 30 minutes. The sugar pulls out juice, the salt sharpens the flavour, and the colander lets the worst of it escape.

Do not throw that juice away. Simmer it down with a splash of lemon juice to make a glaze, or drink it over ice with a little soda. It is the cook's perk.

After draining, pat the slices dry with kitchen paper. This feels fussy. Do it anyway. A dry surface means the fruit will roast rather than steam, and steam is the enemy of crisp pastry.

Choose your thickener like you mean it

For a fruit tart or pie, cornflour is the reliable workhorse. Use about 1 tbsp per 500g of prepared fruit, mixed with the sugar before it meets the peaches. Tapioca starch works too, with a slightly softer set. Plain flour is not a thickener in this context; it turns gluey and dulls the fruit.

If you are baking a deep pie with a lot of fruit, go up to 1½ tbsp cornflour per 500g. For a single tart layer, 1 tbsp is usually enough. Remember that the thickener needs to reach a simmer to do its job, so a tart that is baked just until the fruit is warm will remain juicy.

Pre-roast when the fruit is very ripe

When peaches are at their most fragrant and tender — the sort that leave a damp mark on the chopping board — I pre-roast them. Spread the slices on a lined baking tray, sprinkle lightly with sugar, and roast at 200°C fan for 10 to 12 minutes, until they slump slightly and release their juice. Cool, drain and pat dry. You lose a little volume and a lot of water. The flavour concentrates. The pastry stands a chance.

This is also a useful trick in November, when the peaches in UK shops are often imported and can be fragrant but uneven. Pre-roasting evens them out.

Let almond cream earn its keep

A layer of almond cream — frangipane, if you like the fancy word — is not just a flavour decision. It is a moisture barrier. Spread thinly over the pastry before the fruit goes on, it seals the surface and absorbs some of the juice as it bakes. It also tastes of almonds and butter, which is rarely a bad thing.

Keep the layer modest: about 3 to 4mm thick. Too much and the tart becomes heavy; too little and you may as well not bother. A spoonful of plain flour in the almond cream helps it set rather than turn oily.

A November peach and almond tart

This is a tart for the awkward end of the year, when the light is low and the peaches are travellers. It serves 6 to 8, depending on generosity.

You will need:

• 320g all-butter puff pastry, ready-rolled (or your own, if you are that sort of cook)
• 3 to 4 ripe peaches or nectarines, about 600g prepared weight
• 1 tbsp caster sugar, plus extra for sprinkling
• Pinch of fine salt
• 1 tbsp cornflour
• 60g ground almonds
• 50g soft unsalted butter
• 50g caster sugar
• 1 small egg
• 1 tbsp plain flour
• A few drops almond extract
• 2 tbsp apricot jam, warmed and sieved
• A small handful of flaked almonds

Method:

1. Slice the peaches, toss with the 1 tbsp caster sugar and salt, and leave in a colander for 30 minutes. Pat dry. Reserve the juice for a glaze if you like.
2. Heat the oven to 200°C fan / 220°C conventional. Line a 23cm tart tin with the pastry, prick the base lightly and chill for 15 minutes.
3. Beat the butter and sugar until pale, then add the egg, ground almonds, plain flour and almond extract. Spread this almond cream over the chilled pastry base in a thin, even layer.
4. Toss the drained peaches with the cornflour. Arrange them over the almond cream, slightly overlapping. Scatter with flaked almonds and a little caster sugar.
5. Bake for 35 to 40 minutes, until the pastry is deep golden and the fruit is tender with caramelised edges. If the almonds brown too quickly, cover loosely with foil.
6. Warm the apricot jam with a teaspoon of the reserved peach juice and brush over the fruit while the tart is still warm.
7. Cool for at least 20 minutes before slicing. This is the hardest instruction in the recipe.

The leftover test

A good peach tart should still have some crispness the next day, though it will never be quite the same. Keep it uncovered at room temperature rather than in the fridge — pastry and refrigeration are not friends. Reheat gently in a low oven if you want to revive the base.

Baking with ripe peaches is not about eliminating their juiciness. It is about giving that juice somewhere to go other than the bottom of the tin. Drain, thicken, shield and bake with confidence. The crust deserves it. So do the peaches.