Step 1: Preheat your oven to 180°C (350°F) and grease a 9-inch loaf pan or line it with parchment paper.
Step 2: Place the chopped dates and baking soda in a heatproof bowl. Pour the boiling water over them and let soak for 10-15 minutes until softened.
Step 3: In a large mixing bowl, cream together the softened butter and brown sugar until light and fluffy.
Step 4: Add the eggs one at a time, beating well after each addition, then stir in the vanilla extract.
Step 5: Sift the flour, cinnamon, ginger, and cloves into the wet mixture. Gently fold until just combined.
Step 6: Stir in the soaked date mixture (including the liquid), the orange zest, and the chopped walnuts.
Step 7: Pour the batter into the prepared pan and bake for 45-50 minutes, or until a skewer inserted into the center comes out clean.
Step 8: While the cake cools slightly, whisk together the powdered sugar and orange juice to create a smooth drizzle.
Step 9: Poke holes in the warm cake with a skewer and pour half the drizzle over. Once completely cool, pour the remaining drizzle on top.