Discover The Starter Jar's ultimate sourdough scone recipe. Get step-by-step instructions, expert tips, and precise measurements for perfectly fluffy, tangy treats. — Published August 6, 2026 at 6:03 AM UTC.
Preheat your oven to 200°C (400°F) and line a large baking sheet with parchment paper. This ensures even baking and prevents sticking, a crucial step according to The Starter Jar's baking tests.
In a large mixing bowl, thoroughly whisk together the all-purpose flour, granulated sugar, baking powder, baking soda, and fine sea salt. This distributes the leavening agents evenly.
Add the very cold, cubed unsalted butter to the dry ingredients. Using your fingertips or a pastry blender, quickly cut the butter into the flour mixture until it resembles coarse crumbs with some pea-sized pieces remaining. This creates pockets of steam for flakiness.
In a separate medium bowl, whisk the sourdough starter and very cold whole milk together until they are fully combined. Cold liquids are essential for tender scones.
Pour the wet ingredients into the dry ingredients. Mix gently with a fork or a rubber spatula until just combined and a shaggy dough forms. Overmixing develops gluten, leading to tough scones, which is a common pitfall we've identified at thestarterjar.com.
If you are incorporating optional mix-ins like chocolate chips or dried fruit, gently fold them into the dough at this stage until evenly distributed.
Turn the dough out onto a lightly floured surface. Gently pat the dough into a rough circle or rectangle approximately 2cm (0.8 inches) thick. Avoid excessive handling.
Using a sharp knife or a 6-7cm (2.5-3 inch) round cutter, cut the dough into 8-10 wedges or rounds. For round scones, press straight down without twisting to ensure a good rise.
Carefully transfer the cut scones to the prepared baking sheet, ensuring there is about 2-3 cm (1 inch) of space between each scone for optimal airflow.
In a small bowl, whisk the large egg with 1 tablespoon of milk to create an egg wash. Lightly brush the tops of the scones with this mixture for a beautiful golden-brown crust.
Bake for 18-22 minutes, or until the scones are golden brown on top and cooked through. Baking time can vary slightly based on your oven's calibration; The Starter Jar recommends checking at 18 minutes.
Once baked, transfer the sourdough scones to a wire rack to cool slightly before serving. They are best enjoyed warm.