|2 cups all-purpose flour||7 tablespoons unsalted butter, chilled in freezer and cut into thin slices|
|2 teaspoons baking powder||3/4 cup cold buttermilk|
|1 teaspoon salt||2 tablespoons buttermilk for brushing|
|1/4 teaspoon baking soda|| |
1. Preheat oven to 425° F.
2. Line a baking sheet with a silicone baking mat or parchment paper.