Preheat the oven: Preheat your oven to 375°F (190°C). Line a baking sheet with parchment paper or a silicone baking mat.
- Make the dough: In a large bowl, whisk together the flour, sugar, baking powder, salt, and baking soda. Add the cold cubed butter and, using a pastry cutter or your hands, work the butter into the flour until the mixture resembles coarse crumbs with pea-sized bits of butter.
- Add the wet ingredients: In a small bowl, whisk together the heavy cream, egg, vanilla extract, citrus zest, and citrus juice. Pour the wet ingredients into the dry ingredients and stir gently until just combined. If you’re using candied ginger or dried fruit, fold them in at this stage.
- Shape the dough: Turn the dough out onto a lightly floured surface and gently knead it a few times until it just comes together. Be careful not to overwork the dough to keep the scones light and fluffy. Pat the dough into a circle about 1-inch thick. Cut the dough into 8 wedges (like a pizza) and transfer them to the prepared baking sheet.
- Bake the scones: Bake in the preheated oven for 18-20 minutes, or until the scones are golden brown on top and a toothpick inserted into the center comes out clean.
- Make the glaze: While the scones are baking, make the glaze by whisking together the powdered sugar, citrus juice, and vanilla extract until smooth.
- Glaze the scones: Once the scones are baked, remove them from the oven and allow them to cool for a few minutes on a wire rack. Drizzle the glaze over the scones while they are still slightly warm.
- Serve: Serve the citrus scones warm or at room temperature with your favorite tea or coffee. Enjoy!