In a bowl take sugar and eggs and beat til creamy

Dein add oil and mix it

In a cup take hot water and mix coco powder and cofffee

Now add dry ingridents in eggs mixture and add coffee mixture and buttermilk

In a 8" mold pour all and bake til 35_40 mints

For ganche.. Take 200 gm chocolate and 100 gm cream and micro it for few seconds.. Dein apply it on cake and keep it in fridge for 2_3 hours