01 - Preheat the oven to 400°F (204°C). Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together all-purpose flour, granulated sugar, baking powder, kosher salt, and ground cardamom until thoroughly blended.
03 - Add the cold cubed unsalted butter to the flour mixture. Cut in the butter using a pastry cutter or your fingertips until the mixture resembles coarse crumbs with some larger pea-sized pieces.
04 - Fold in the freshly grated orange zest, ensuring even distribution throughout the mixture.
05 - Pour in the heavy cream and vanilla extract. Stir gently with a fork just until the dough comes together and no dry pockets remain. Do not overmix.
06 - Transfer dough onto a lightly floured surface. Pat into a 1-inch thick circle. Using a sharp knife or bench scraper, cut the circle into 8 even wedges.
07 - Arrange wedges on the prepared baking sheet, spacing slightly apart. Bake for 15–18 minutes until scones are golden and set.
08 - Allow scones to cool on the baking sheet for several minutes before transferring to a wire rack.