Directions
<ol class="no-list-style"> <li class="MethodStepper"> <h4 class="step-title">Step 1</h4> Make the pastry by placing the flour, butter, icing sugar and salt in a food processor. Pulse until the mixture resembles fine breadcrumbs (this technique keeps the butter cold while incorporating it, resulting in flaky pastry). Add the egg yolk and enough cold water to bind the dough. Be careful not to overwork the dough as this develops gluten, making your pastry tough. </li> <li class="MethodStepper"> <h4 class="step-title">Step 2</h4> Shape the dough into a disc, wrap in cling film and refrigerate for at least 30 minutes. This resting period allows the gluten to relax and the butter to firm up again, preventing shrinkage during baking. </li> <li class="MethodStepper"> <h4 class="step-title">Step 3</h4> Preheat your oven to 180°C (160°C fan). Roll out the chilled pastry on a lightly floured surface to about 3mm thickness, creating a circle large enough to line your tart tin. Gently press the pastry into the tin, ensuring it fills all corners. Trim excess pastry, leaving a small overhang to allow for shrinkage. </li> <li class="MethodStepper"> <h4 class="step-title">Step 4</h4> Prick the base all over with a fork (this prevents air bubbles forming), then line with parchment paper and fill with baking beans or rice. Blind bake for 15 minutes, then remove the beans and paper and bake for a further 5-10 minutes until the pastry is golden and crisp. The initial blind baking with weights prevents the pastry from puffing up, while the final bake ensures a fully cooked, crisp base. </li> <li class="MethodStepper"> <h4 class="step-title">Step 5</h4> While the pastry cools, prepare the custard filling. In a medium saucepan, heat the milk, cream and vanilla until just below simmering point (around 85°C if using a thermometer). Remove from heat and add the chopped chocolate, stirring gently until completely melted and smooth. The residual heat will gently melt the chocolate without risking separation. </li> <li class="MethodStepper"> <h4 class="step-title">Step 6</h4> In a heatproof bowl, whisk together the egg yolks, caster sugar, cornflour, and salt until pale and slightly thickened. This initial whisking introduces air and helps dissolve the sugar for a smoother custard. </li> <li class="MethodStepper"> <h4 class="step-title">Step 7</h4> Very gradually pour the warm chocolate mixture onto the egg mixture, whisking constantly. This tempering process slowly raises the temperature of the eggs without scrambling them. Pour the mixture back into the saucepan and cook over low heat, stirring constantly, until thickened enough to coat the back of a spoon (around 82-85°C). </li> <li class="MethodStepper"> <h4 class="step-title">Step 8</h4> Remove from heat immediately and pass through a fine mesh sieve into a clean bowl to remove any lumps or cooked egg particles. This extra step ensures your custard will be perfectly smooth and silky. </li> <li class="MethodStepper"> <h4 class="step-title">Step 9</h4> Allow the custard to cool slightly for about 10 minutes (this prevents the hot filling from softening your crisp pastry base), then pour into the baked tart case. Smooth the surface with an offset spatula if needed. </li> <li class="MethodStepper"> <h4 class="step-title">Step 10</h4> Refrigerate the tart for at least 4 hours, preferably overnight, to allow the custard to set completely. The slow cooling creates a silkier texture than rapid chilling. </li> <li class="MethodStepper"> <h4 class="step-title">Step 11</h4> Before serving, allow the tart to sit at room temperature for 20-30 minutes to take the chill off (this enhances the chocolate flavors). If desired, dust with cocoa powder and decorate with fresh berries or a dollop of whipped cream. Slice with a warm knife for the cleanest cuts through the silky filling. </li> </ol>