01 -
Combine flour, cocoa powder, caster sugar, and salt evenly in a food processor or mixing bowl.
02 -
Add cold cubed butter and blend or rub in until mixture resembles coarse, sandy crumbs.
03 -
Pour in cold milk and mix just until dough forms. Shape into disc, wrap tightly, and refrigerate at least 3 hours.
04 -
Roll chilled dough to 3 mm thickness on floured surface, line 25 cm tart tin, trim edges, and dock base with fork. Refrigerate 30 minutes.
05 -
Preheat oven to 170°C fan or 190°C conventional. Line pastry with baking paper and weights. Bake 20 minutes, remove weights, bake 15 more until firm. Cool completely.
06 -
Heat caster sugar over medium-low heat, swirling until amber. Add butter, then whisk in warmed cream, vanilla, and salt until smooth.
07 -
Cool caramel slightly, pour into cooled tart shell, and refrigerate until firm.
08 -
Warm double cream until steaming. Pour over chopped chocolate, let stand 1 minute, then whisk gently until smooth.
09 -
Pour ganache evenly over set caramel. Tap gently to smooth surface. Chill until set.
10 -
Dust lightly with cocoa powder and sprinkle flaky sea salt before serving.