8. Make Drizzle, Decorate, and Serve
While the cake cools, whisk together the powdered sugar and lemon juice in a large bowl. The icing should have the consistency of heavy cream. If it's too stiff, add a teaspoon or two of water to loosen.
When the cake is completely cool, spoon the icing over the top of the loaf, letting it run down the sides. Decorate the top of the cake with extra candied ginger, if you like, and serve in thick slices.