3 cups (375 grams) all-purpose flour, plus more for dusting¼ cup (50 grams) granulated sugar4 teaspoons (20 grams) baking powder1¼ teaspoons (3.75 grams) kosher salt½ cup (113 grams) cold unsalted butter, cubed½ cup (85 grams) finely chopped dark chocolate⅓ cup (53 grams) finely chopped crystallized ginger⅓ cup (53 grams) finely chopped dates1 cup (240 grams) plus 1 tablespoon (15 grams) cold heavy whipping cream, divided1 tablespoon (13 grams) vanilla extractGarnish: turbinado sugar
Line a baking sheet with parchment paper.
In a large bowl, whisk together flour, granulated sugar, baking powder, and salt. Using a pastry blender or your hands, cut in cold butter until mixture is crumbly. Stir in chocolate, ginger, and dates. Add 1 cup (240 grams) cold cream and vanilla, stirring with a fork just until it starts to come together; knead in bowl until dough comes together.
Turn out dough onto a lightly floured surface. Pat or roll dough into a 1½-inch- thick rectangle. Using a bench or bowl scraper, cut dough in thirds. Stack dough on top of each other, and flatten to 1½ inches thick. Repeat cutting and stacking procedure once.
Pat or roll dough into a 10×5-inch rectangle (about 1 inch thick). Using a sharp knife or a floured bench scraper, cut dough into 8 (2½-inch) squares. (See Note.) Place 2 inches apart on prepared pan. Freeze until firm, about 15 minutes.
Preheat oven to 375°F (190°C).
Brush remaining 1 tablespoon (15 grams) cold cream onto scones. Garnish with turbinado sugar, if desired.
Bake until golden brown, 16 to 20 minutes. Let cool on pan for 5 minutes. Serve warm, or let cool completely on a wire rack. Store in an airtight container for up to 3 days.