Step 1:
Grease your mug with little butter. Step 2:
add dry ingredients to the mug, and mix well. Step 3:
add egg to the mixture in your mug. Step 4:
be sure to mix it well to avoid any pockets of flour in the corners. Step 5:
pour milk and oil and mix well. Add the vanilla extract and chocolate chips. Step 6:
microwave for 3 minutes on maximum power (1000watt). Step 7:
wait until the cake stops rising, and sets in the mug. Step 8:
if necessary, run a knife around the sides of the mug, and tip the still warm cake out of the mug and onto a saucer. Step 9:
use little leftover mango pulp as topping.