1 standard 10 oz coffee cup

1/2 stick (4 TBS/ 57 grams) butter

1/4 cup cocoa

1 tsp instant coffee or espresso powder

1/4 cup packed light brown sugar

1 Tbs mayonnaise, light mayo works too (Don’t be scared, mayo is mostly just eggs and oil which are already in this anyway!).

1 egg

1 pinch salt

1/8 tsp vanilla extract

2 Tbs flour

1 handful (i don’t know, about 2 Tbs, do what you want!) bittersweet chocolate chips