Fig Crostata

Flour, sugar, egg yolk, butter, lemon zest, salt — this is the whole architecture of pasta frolla, and each one has one job. Flour and butter in roughly this ratio (150g to 90g, so quite rich — more butter than most British shortcrust habits expect) give you short, sandy crumb rather than the stretch you'd get from more flour or more handling. Yolks only, no whites: whites bring gluten-toughening protein and water you don't want here, yolk brings fat and colour without either problem. Any plain flour with no bran in it does the job — a soft British plain flour is fine, nothing fancy needed. Caster sugar rather than granulated because it dissolves into the rubbed-in mix rather than sitting as grit; icing sugar would work too but it's finer than this needs. Lemon zest and a pinch of salt aren't there to be tasted outright — they're there so the whole thing doesn't read as flat sweetness, the way a pinch of salt in a Victoria sponge isn't there to taste salty.

Butter: use something with no odd flavour of its own, properly cold from the fridge, cut small before you start — any neutral, firm block butter works, and this is one of the few places where a UK "spreadable" butter, softer and wetter by design, will actually fight you, because the dough wants firm fat you cut in with a quick hand, not fat that's already halfway to cream.

Figs are the one ingredient you can't substitute your way around and still call it the same dish — a kilo for a 26–28cm tin is a generous single layer, slightly overlapping. Buy them ripe but not split and leaking; a fig that gives gently under your thumb is ready, one that's still hard as a plum stone will sit on the tart raw and dry rather than softening in that short second bake. British supermarkets sell figs properly ripe rarely and briefly — if yours are underripe, leave them out on the counter two or three days before you slice, don't trust the fridge to ripen anything. Out of season, you're better off making this with another thin-sliced fruit you trust (pear, some say) than forcing hard figs through it; figs out of season are a different product wearing the same name.

Apricot jam, crushed amaretti, chopped hazelnuts — this trio is doing the moisture-management job, not flavour alone. Jam alone would stay wet under the fig juice; the crushed amaretti drinks that moisture up as it bakes, like breadcrumbs in a frangipane-less filling, and brings a bitter-almond note that figs actually want next to them. No amaretti in the cupboard — plain digestive or any dry sweet biscuit, crushed, does the structural job, you just lose that almond edge. Hazelnuts give bite against the soft fig and the softened biscuit; almonds or walnuts, chopped the same way, do the same mechanical job if that's what's in your cupboard.

On the fan oven numbers: 175°C to set the base is enough to dry it through without colouring the edges to dark before the centre firms — this is thin dough (4–5mm) in a tin, not a thick rustic base, so it doesn't need long or fierce heat, it needs even heat. The base is done not by the clock but by look and touch: pale gold, dry to a fingertip press, no longer glossy-raw in the centre. Ten minutes is the floor, not the answer. Same with the 8 minutes at 180°C at the end — you're watching the fig edges for the first hint of colour and slight softening, you're not cooking a fruit, you're warming one through.

One more thing worth saying plainly, because it's the part nobody puts in the method: let the base go properly, fully cold before you put anything on it. Warm base plus jam filling means a softened base by the time it's served — this is just physics, not a ritual, but skipping it is the single most common reason a home crostata ends up soggy in the middle rather than crisp. Patience here isn't virtue for its own sake, it's the actual ingredient that keeps the bottom from betraying the top.