Melt the butter in a large bowl and stir with a big spoon until fluffy. Gradually add the eggs, sugar and vanilla, stirring constantly.
In another bowl mix the flour with the baking powder and sieve. Add the cinnamon and cocoa to the flour, mix well and all fold into the egg, butter and sugar mixture. Finally, pour in the red wine.
Pour the dough into a greased bread tin and bake in the preheated oven for about 90 minutes. Do a toothpick test; push a toothpick into the centre of the cake. When dough no longer sticks to the toothpick the cake is ready.
Remove the cake from the tin and allow to cool.
When the red wine cake has cooled, brush with apricot jam and then cover with chocolate cake covering. The red wine cake tastes great even without the covering.