Mystery Cake

3/4 cup Sugar

1 cup Flour

1 teaspoon Baking powder

1/8 teaspoon Salt

1 Square bitter chocolate

2 tablespoons Butter

1/2 cup Milk

1 teaspoon Vanilla

1/2 cup Brown sugar

1/2 cup White sugar

4 tablespoons Cocoa

1 cup Coffee; strong -- cold

Melt chocolate and butter together add 3/4 c sugar, flour, baking powder and salt and blend well. Combine milk and vanilla. Add and mix well. Pour into greased pan and combine white and brown sugar and cocoa and sprinkle over batter. Pour coffee over top. Bake at 350~ for 40 minutes. Serve warm or cold with whipped cream.