[RECIPE] Sortedfood's recipe: Chocolate Cake-in-a-mug

I always crave for something sweet, and that's a really big problem for me. A single serving of chocolate cake can satisfy me without me overeating more sweets~

Out of all the recipes I came across, Sorted Food's chocolate cake-in-a-mug recipe seems to be the most foolproof and simplest one. I did some minor changes to their recipe:

Chocolate Cake-in-a-mug (single serving):
2 tbsp self-raising flour*
1 tbsp cocoa
1 tsp coffee powder
1 tbsp  sugar (the chocolate chips I have at home are really sweet, so I use less sugar)
1 (small) egg
1 tbsp oil
1 tbsp milk
chocolate chips

*self-rasing flour: 1.25 (all-purpose flour) to 0.25 (baking powder) ratio