Preheat the oven to 350°F (180°C) and grease a cake tin.
Melt the butter and dark chocolate together over a double boiler or in the microwave. Stir in the grated ginger and let it cool slightly.
In a bowl, whisk together the flour, cocoa powder, and baking powder.
In a separate bowl, whisk the eggs with the caster sugar until light and fluffy.
Add the melted chocolate-butter mixture to the egg mixture, then gradually fold in the dry ingredients, followed by the milk.
Pour the batter into the prepared cake tin and bake for 40-45 minutes, or until a toothpick inserted into the center comes out clean.
Let the cake cool completely in the tin before dusting with powdered sugar and serving.
To provide the best experiences, we and our partners use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us and our partners to process personal data such as browsing behavior or unique IDs on this site and show (non-) personalized ads. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Click below to consent to the above or make granular choices. Your choices will be applied to this site only. You can change your settings at any time, including withdrawing your consent, by using the toggles on the Cookie Policy, or by clicking on the manage consent button at the bottom of the screen.