Sift together:

2 cups all-purpose flour
1 cup sugar
2 tsp. baking soda
4 tbsp. cocoa (heaping)
1/2 tsp. salt

Mix in:

1 cup cold water
1 tsp. vanilla
1 cup Miracle Whip mayonnaise

Preheat oven to 350°F.

Pour into a greased and floured 13x9-inch pan or 2 cake pans.

Bake in preheated oven for 30 minutes or until a wooden pick inserted in center comes out clean.