Add the yoghurt and baking soda to a bowl. Mix well till the mixture turns frothy.
Mix in the jaggery powder and melted ghee. Whisk well till the jaggery dissolves.
Now, add the ragi flour, cocoa powder, milk and baking powder. Combine the batter well but avoid overmixing.
Transfer the batter to a microwave safe dish and microwave it on regular heating mode for 3 minutes or until a skewer inserted in the centre comes out clean.
Dissolve the instant coffee powder in water.
Poke holes in the cake using a skewer. Pour over the soak and let the cake rest for 5 minutes.
For the ganache, add chopped chocolate to a bowl and pour over warm fresh cream. Cover with a lid and let it sit for 2-3 minutes. Now, continue mixing until the chocolate dissolves completely.
Cover the cake with a thick layer of the chocolate ganache. Serve warm or chilled.
Recipe by Bake with Shivesh at https://bakewithshivesh.com/ragi-chocolate-cake-in-microwave/