Mug chocolate cake @ microwave

For ➊-➋
4 tbs flour, sifted
4 tbs sugar, sifted
2 tbs unsweetened cocoa, sifted
2 tbs whisked egg*
3 tbs milk
3 tbs oil
3 tbs chocolate chips**
splash vanilla or other flavoring, e.g. peppermint or cinnamon
icing sugar

Add all of the dry ingredients to the mug and mix.
Add the egg* and combine well.
Stir in milk and oil.
Add chocolate chips** and splash of vanilla. Stir well.
Microwave for 3 m in a 1000w oven, or 4 m in a 700w oven.
It will crown over the top of the mug, but collapses once the heat stops.

Shake out of the mug. Serve warm with a dust of icing sugar. Or let it cool for about 30 m. Serve with red fruits.

*1 egg is too much, 1 egg white is too eggy, 1 yolk is too dense. Omit egg for a fudgier texture. Or replace with an extra tbs of milk.
**Or a broken up candy bar.