01 -
Cut butter into 6 mm cubes and place in the freezer for at least 10 minutes until well chilled.
02 -
In a food processor, pulse together flour, sugar, and salt once or twice to blend.
03 -
Add butter cubes to the flour mixture. Pulse a few times until the butter is evenly distributed and the mixture resembles coarse crumbs, with largest pieces about the size of peas.
04 -
Drizzle in apple cider vinegar and ice water, pulsing once or twice between additions, until the dough appears crumbly but holds together when pinched.
05 -
Turn dough out onto a lightly floured surface. Form quickly into a round, flat disk without over-handling. Wrap tightly in plastic wrap and refrigerate for at least 1 hour.
06 -
Remove dough from refrigerator and let stand 5–10 minutes for pliability. Roll on a floured surface to a 30 cm circle about 3 mm thick. Ensure even pressure and apply additional flour as needed to prevent sticking.
07 -
Preheat oven to 190°C. Line a large baking sheet with parchment paper. Gently transfer rolled dough onto the prepared pan and refrigerate while assembling the filling.
08 -
In a mixing bowl, stir together brown sugar, lemon juice, vanilla extract, arrowroot starch, cinnamon, ginger, and salt. Add sliced peaches and toss until well coated.
09 -
Spoon peach filling onto center of pastry, leaving a 5 cm border. Fold edges of dough over the fruit, overlapping pastry where needed.
10 -
Brush pastry edges with egg wash or milk wash and sprinkle generously with demerara sugar, if using. Bake 40–50 minutes until crust is golden brown and fruit juices are bubbling. If crust darkens too quickly, tent with foil.
11 -
Allow galette to cool to room temperature on a baking rack. While still warm, lightly brush the peaches with melted apricot or peach jelly to glaze, if desired. Serve warm, optionally with confectioners’ sugar or vanilla ice cream.