For the baking mix, sieve the flour into a bowl. Mix with baking powder. First pour into the glass, shake smooth and press down a little. Then pour in the sugar. Mix cocoa, 1 pinch of salt, cinnamon, ginger and cloves.
Add to the sugar. Sprinkle the last layer of grated chocolate on top (see picture on the left) and close the jar. Decorate with the instructions for baking.
Preheat the oven for final baking (electric oven: 175 °C/circulating air: 150 °C/gas: see manufacturer). Grease the box form and dust with flour.
Pour the baking mixture into a mixing bowl. Add butter, eggs and milk. Using the whisks of the mixer, mix to a smooth dough, first on a low setting, then on the highest setting. Fill into the tin and smooth it down.
Bake in the lower third of the hot oven for 50-60 minutes. Approx. 10 minutes before the end of the baking time, make a wooden stick test. Remove from the oven and let it cool in the mould. Turn out onto a cake rack and let it cool completely.
Break the chocolate into pieces for the icing. Melt with cream and coconut oil in a small pot while stirring at low heat. Remove from the heat and let it cool down. Spread evenly on the cake.