Preheat oven to 160°C fan
Mix the dry ingredients together - flour, cocoa, sugar and bread soda
Melt the butter and set it aside
Mix Guinness, milk, eggs and vanilla together and then add to the butter. Give that a good mix to incorporate fully
Add the dry mix and use a whisk to remove any lumps
Pour the batter into your two tins and bake for 35-40 minutes
Leave for ten minutes in the tins then cool on a wire tray
When ready to assemble add all the ingredients for your topping to a mixing bowl and beat to a thick soupy texture
Assemble the cake
