01 -
Place plain flour, chilled butter, vegetable shortening, granulated sugar, and sea salt into a food processor. Pulse briefly until the texture becomes a coarse meal. Continue pulsing until a soft dough forms.
02 -
Transfer dough onto floured parchment paper. Shape into a flat disk, wrap tightly, and refrigerate for at least 2 hours.
03 -
Preheat oven to 190°C. In a bowl, combine granulated sugar, plain flour, and cinnamon. Gently toss the sliced peaches in the mixture to evenly coat.
04 -
Remove chilled dough and place on floured parchment cut to 30 cm square. Knead lightly around edges to soften, then roll into a 28 cm diameter circle, maintaining slightly thicker edges.
05 -
Arrange peach wedges concentrically atop the dough, starting 2.5–4 cm from the border and moving inward. Discard excess juices.
06 -
Fold outer dough over peaches, pleating to secure. Seal seams well. Brush pastry with milk and sprinkle evenly with raw sugar.
07 -
Transfer parchment-lined galette to a baking sheet. If needed, place an extra sheet below to catch drips. Bake for 50–60 minutes until the crust is golden and the filling bubbles. Loosely cover with foil if excess browning occurs; remove foil for the final 10 minutes.
08 -
Remove from oven. Cool on the tray set over a wire rack until warm. Slice into wedges and serve.