In a large mixing bowl, combine the all-purpose flour, sugar, baking powder, and salt. Whisk until combined.
280 grams all-purpose flour, 120 grams white sugar, 10 grams baking powder, 3 grams salt
Grate one stick of frozen butter and add to the flour mixture. Cut in with a pastry cutter or mix with your fingers until the small pieces of butter are coated with flour and create pea-sized coarse crumbs. Stir in 1/2 c white chocolate chips.
113 grams unsalted butter, frozen, 90 grams white chocolate chips
3. In a medium bowl, whisk together the cold sourdough discard, egg, heavy cream, and peppermint extract until smooth.
120 grams sourdough discard, cold, 1 large egg, 30 grams heavy cream, cold, 6 grams peppermint extract
Pour the wet ingredients into the dry ingredients. Mix the scone dough with a rubber spatula until the cream mixture is combined. The dough will be crumbly, but be careful not to over mix the dough.
Turn out the dough onto a clean surface and knead the dough for about 30 seconds, just until the dough forms, then pat the dough into an 8-inch circle. Cut it into 8 equal wedges with a bench scraper or a large knife.
Place wedges on a baking sheet with parchment paper with space in between them. Cover with a plastic cover and chill in the freezer for at least 20 minutes while the oven preheats. Preheat the oven to 400 degrees F. With a pastry brush, brush the tops of the scones with extra cold heavy cream.
Bake the scones for 20-25 minutes, or until the top of the scones are golden brown. Remove them from the oven, drizzle with the peppermint glaze and serve warm!