Take a coffee cup like this one
Put 3 tablespoons of cocoa powder(I used nesquik), 3 tablespoons of flour and 1 or 2 of sugar
Then add a whole egg, 3 tablespoons of oil and 3 tablespoons of milk or water(I used milk)
Mix eveything good until you get something like this. The white spots is the flour but thats not a very big deal.
Move the whole mixture into a bowl like this, make sure its suitable for a microwave. If its not it might get burned by the microwave or could even break(make sure you put some butter on the bowl).
The butter will help so that the cake wont get stuck inside the bowl. Now put it in the microwave and set it to high for 3-4 minutes.
Voila! perfect portion for 1-2 persons, enjoy ! :D