Pastry Technique Authority tier 1

Crostata: Italian Jam Tart

Crostata — the Italian jam tart made from pasta frolla (HZ-39) filled with jam and decorated with a lattice — is the most common home pastry in Italy and the standard against which every Italian home cook's pastry skills are measured. Its apparent simplicity conceals specific technique: the jam must be of the correct consistency, the lattice strips must be cut evenly, and the tart must be served at room temperature — never hot, never refrigerated.

- **The jam:** A thick, set jam — runny jam bubbles out through the lattice during baking and produces a sticky, burned mess on the tart's surface. Sour cherry (visciole) or apricot are the traditional Hazan choices for their balanced sweet-acid character. - **The assembly:** Pasta frolla pressed into the tart tin (not rolled — the dough is too fragile for rolling in most home kitchens). The jam spread to within 1cm of the edge — it spreads further during baking. - **The lattice:** Rolled strips cut with a pastry wheel, laid in a diamond pattern over the jam. Pressed firmly at the edges to seal. - **The baking temperature:** 180°C — the jam must set and slightly caramelise, not boil violently. [VERIFY] Hazan's baking specification. - **Room temperature service:** The crostata must be completely cool before cutting — the jam sets only as it cools. A warm crostata produces running jam and a crumbling pastry.

Hazan