5 Minute Chocolate Cake

Ingredients
4 tablespoons cake flour (that's plain flour, not self-rising)
4 tablespoons sugar
2 tablespoons unsweetened cocoa
1 egg
3 tablespoons milk
3 tablespoons oil
3 tablespoons chocolate chips (optional)
a small splash of vanilla extract

Instructions
1) Add dry ingredients to a coffee mug, and mix well
2) Add the egg and mix thoroughly. Pour in the milk and oil and mix well.
3) Add the chocolate chips (if using) and vanilla extract, and mix again.
4) 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. (this can serve 2)