Step 1: Preheat your oven to 350°F (175°C) and grease an 8-inch square baking dish with butter or parchment paper.
Step 2: In a medium bowl, whisk together the flour, baking soda, ground ginger, cinnamon, cloves, and salt.
Step 3: In a large mixing bowl, cream the softened butter and dark brown sugar together until light and fluffy. Beat in the egg, then stir in the molasses and freshly grated ginger.
Step 4: Gradually add the dry ingredients to the wet mixture, alternating with the boiling water. Stir until just combined; the batter will be thin.
Step 5: Pour the batter into the prepared baking dish and bake for 40-45 minutes, or until a toothpick inserted into the center comes out clean.
Step 6: While the pudding bakes, prepare the citrus sauce. Combine the granulated sugar, orange juice, lemon juice, orange zest, and lemon zest in a small saucepan over medium heat.
Step 7: Bring the sauce to a gentle simmer, stirring until the sugar dissolves. Let it simmer for 5-7 minutes until slightly thickened. Set aside.
Step 8: Once the pudding is done, remove it from the oven and poke several holes across the surface with a skewer. Pour half of the warm citrus sauce over the hot pudding.
Step 9: Let the pudding sit for 10 minutes to absorb the sauce. Serve warm with the remaining sauce drizzled over individual portions.