- 3/4 cup sour cream
 - 4 tablespoons heavy cream, divided
 - 1 tablespoon baking powder
 - 1 teaspoon kosher salt
 - 1 teaspoon sugar
 - 1/2 teaspoon coarsely ground black pepper plus more
 - 2 cups all-purpose flour plus more for surface
 - 6 tablespoons (3/4 stick) chilled unsalted butter, cut into pieces
 - Flaky sea salt (such as Maldon)
 - Salt-and-Pepper Butter (optional)
 - Special equipment: A 2 1/4″-diameter biscuit or cookie cutter
 
- Preheat oven to 425°F. Whisk sour cream and 3 tablespoonss heavy cream in a small bowl.
 - Pulse baking powder, kosher salt, sugar, 1/2 teaspoon pepper, and 2 cups flour in a food processor until combined; add butter and pulse until the texture of coarse meal with a few pea-size pieces of butter remaining.
 - Transfer mixture to a large bowl. Using a spoon, mix in sour cream mixture, then gently knead a few times just until a shaggy dough comes together (a light hand is key to tender biscuits, so be careful not to overmix).
 - Roll out dough on a lightly floured surface until 3/4″ thick. Using cutter, cut out biscuits, rerolling scraps as needed.
 - Place biscuits on a parchment-lined baking sheet and brush with remaining 1 tablespoon heavy cream; sprinkle with sea salt and more pepper. Bake until golden brown on the tops and bottoms, 15–20 minutes. Serve warm with Salt-and-Pepper Butter, if desired.
 - DO AHEAD: Dough can be made and cut out 6 hours ahead. Cover and chill. Biscuits can be baked 2 hours ahead. Reheat before serving, if desired.