01 - Preheat the oven to 350°F. Grease and flour a 9-inch square baking pan.
02 - In a medium bowl, whisk together the flour, ground ginger, cinnamon, cloves, baking soda, and salt.
03 - In a large bowl, beat the softened butter and brown sugar until light and fluffy.
04 - Add the egg to the butter mixture and mix well, then stir in the molasses and freshly grated ginger.
05 - Gradually add the dry ingredients to the wet mixture, stirring until just combined.
06 - Pour in the hot water and blend until the batter is smooth.
07 - Pour the batter into the prepared pan and smooth the surface evenly.
08 - Bake for 30 to 35 minutes, or until a toothpick inserted into the center comes out clean.
09 - Allow the cake to cool in the pan for 10 minutes, then remove to a wire rack to cool completely.
10 - Serve plain, dusted with powdered sugar, or accompanied by whipped cream.