In a bowl, whisk together sugar and oil till nicely combined.
Add curd and milk to this mixture and whisk again until everything is properly combined.
Sift the dry ingredients, namely, flour, cocoa powder, baking powder, baking soda, salt and coffee powder over this mixture and mix well. Do not over mix.
Spread this batter neatly in the same bowl and microwave on regular heating mode for 3-4 mins.
Once the cake is cooked and out of the microwave, melt some chocolate and spread a generous layer of it on the cake!
Recipe by Bake with Shivesh at https://bakewithshivesh.com/one-bowl-chocolate-cake/