5 Minute Chocolate Mug Cake

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1 Coffee Mug
4 tablespoons flour(that's plain flour, not self-raising)
4 tablespoons sugar
2 tablespoons baking cocoa
1 egg
3 tablespoons milk
3 tablespoons oil
3 tablespoons chocolate chips(optional)
a small splash of vanilla extract

Add dry ingredients to mug, and mix well Add the egg and mix
thoroughly.
Pour in the milk and oil and mix well.
Add the chocolate chips (if using) and vanilla essence, and mix again.
Put your mug in the microwave and cook for 3 minutes at 1000 watts. The
cake will rise over the top of the mug, but don't be alarmed!
Allow to cool a little, and tip out onto a plate if desired.
EAT! (This can serve 2)
And why is this the most dangerous cake recipe in the world? Because now
we are all only 5 minutes away from chocolate cake at any time of the
day or night!