In a big bowl add curd, oil, milk, and vanilla extract and beat it nicely. Meanwhile start oven and preheat for 10 min at 180° C.
Other side mix cocoa powder, coffee powder and sugar, add hot water (or milk) and mix well, prepare a smooth cocoa paste, not too thick and not to watery.
In liquid mixture add sugar and beat it again for a min. Then add combined plain flour, baking powder and soda mixture gradually and mix well.
Last add cocoa paste and mix well, then beat it for 2-3min for a nice texture. Grease tin with butter and dust with plain flour.
Add batter into tin, tab it twise and bake for 25-30min, check last with toothpick, if didn't come clean again bake for more 5-10min. After completing wait for 10min in oven, and after that let it cool down completely. Then remove from tin and cut into pieces. Serve fresh or chilled.
