A certain person once had to call her ex-mother-in-law after the divorce to get this recipe. It's that good.

2 c flour (doesn't have to be cake flour)

1 c sugar

3 heaping T cocoa powder

1/4 t salt

1 t baking soda

2 t baking powder

1 c hot water

1 c mayonnaise (not reduced fat)

Bake in a 9x9 at 350 for about 40 minutes. Cool and frost.