In a bowl, add warm water, coffee powder and cocoa powder and whisk well to combine.
To the same mixture, add yogurt, sugar and oil and whisk again for 2-3 mins till the sugar dissolves completely .
Add in the flour, baking powder and baking soda and give a final whisk till a smooth, lump-free chocolate batter is achieved.
Now, take a greased 6-inch saucepan and line the bottom with parchment paper. Pour the chocolate batter into the saucepan.
Now, take a tawa or frying pan and heat it on medium low heat. Place the saucepan carefully over it and cover it with a lid. Cook for 25-30 mins on low heat or till a skewer inserted in the centre comes out clean.
Make the dark chocolate ganache by heating the cream and chopped chocolate in a microwave at 30 seconds intervals till no lumps remain. Repeat the same process for white chocolate ganache as well and transfer it into a piping bag.
Once the cake has cooled and been demoulded, cover it with dark chocolate ganache and create a web pattern with white chocolate ganache over it.
Recipe by Bake with Shivesh at https://bakewithshivesh.com/chocolate-cake-in-saucepan/