3 c. flour
2 tsp. baking soda
6 tbsp. cocoa
2 c. sugar
1/2 tsp. salt
2 tsp. vanilla
2 tbsp. vinegar
10 tbsp. butter, melted

Put ingredients in bowl; mix. Make 3 holes; into each hole, put one of the following: 2 teaspoons vanilla, 2 tablespoons vinegar, 10 tablespoons melted butter. Over this, pour 2 cups cold water. Stir until smooth. Pour into 9 x 13-inch pan.

Bake at 350°F until toothpick comes out clean, about 35 to 40 minutes.