Sieve all the dry ingredients together( all purpose flour, cocoa powder, baking soda, baking powder, powdered sugar) in a bowl
In a separate bowl mix of condense milk, water, vanilla essence and mix it well.
Now add all the dry ingredients into the bowl of wet ingredients and mix it well till no lumps.
Now add melted butter, oil and mix in cut and fold method till oil gets absorbed.
Lastly, add vinegar and mix it well again.
Chocolate batter is ready to bake.
Now take a micro proof bowl and grease it with oil all around the edges.
Line the bowl with parchment paper so that cake will come out easily after baking. Grease it again with oil.
Now pour the batter into the greased mould and bake it in microwave high power for 5-6 minutes.
Once baked, remove it from the oven and let it cool down for some time.
Once cools down, remove the parchment paper and put it on a wired rack for decoration. You can cut into slices and eat instant but I like to decorate so that it will become tastier and looks attractive.
For that, I have taken chocolate Ganache and put little butter for shiny and glossy effect.
Put the plate below the wired rack so that you can collect extra ganache and now pour it all around to cover the cake.
Once cake gets fully covered, spread some choco chips or decorate as per your wish.