Ingredients:

3 tbsp flour
1 tsp instant coffee
2 tbsp cocoa powder
2,5 tbsp sugar
1/4 tsp baking powder
2 tbsp milk
1 egg
2 tbsp vegetable oil
1/2 tsp. vanilla

Method of preparation:

In a bowl mix the flour, ground coffee, cocoa powder, sugar and baking powder. Mix well.
Add milk, egg, oil and vanilla. Stir again with a fork until a homogeneous dense mass.
Pour the mixture into a greased mug and microwave on the highest mode for about 90 seconds.
Serve with vanilla ice cream.