In a large mixing bowl, combine flour, sugar, baking powder, and salt. Whisk together until incorporated.
250 grams all-purpose flour, 100 grams sugar, 10 grams baking powder, 3 grams salt
Grate the cold/frozen butter and add to the flour mixture. Mix with your fingers until the small pieces of butter are coated with flour.
113 grams unsalted butter, frozen
Next, sprinkle in your chocolate chips or chunks and mix until incorporated.
175 grams chocolate chips
In a medium bowl, whisk together the sourdough discard, egg, heavy cream and vanilla extract until smooth.
1 egg, cold, 8 grams vanilla extract, 45 grams heavy cream, cold, 120 grams sourdough discard, cold
Pour the wet ingredients evenly on top of the butter mixture. Mix the scone dough with a rubber spatula until the cream mixture is combined. The dough will be crumbly with some bites of dry flour. Be careful not to over mix the dough, the flour will be incorporated in the next step.
Turn out the mixture onto a lightly floured surface and pat into a rectangle. Then, with a bench scraper, fold the dough in half, then press down to create the large rectangle again. Repeat this 3-4 times. Folding the dough helps to create all of those beautiful flaky layers!
With your hands, form the dough into an 8″ disc. Cut the soft dough into 8 equal wedges with a bench scraper or a large knife. Be careful not to slide the bench scraper when cutting the scones! This will close off the dough, which prevents the scones from getting the flaky layers. Simply press straight down and pull straight up.
Place the unbaked scones on a prepared baking sheet with parchment paper with space in between them. Cover and chill them in the fridge for at least 15 minutes while the oven preheats. This plastic lid fits perfectly over my baking sheets!To long-ferment: Store the covered scones in the fridge overnight up to 24 hours. Preheat the oven to 400 degrees F.
With a pastry brush, top the scones with more heavy whipping cream and sprinkle on a layer of coarse sugar, if desired.
Bake the scones for 17-20 minutes, or until the top of the scones are lightly golden brown. Remove and place on a wire rack to cool slightly. Enjoy!