3 cups flour
2 cups sugar
2 teaspoon baking soda
dash salt
1/2 cup cocoa
2/3 cup oil
2 teaspoon vanilla
2 tablespoon vinegar
2 cups cold water
Combine ingredients and pour into an ungreased 9 x 13 inch pan. Bake for 1 hour at 350 (180) degrees.
You can do some modifications, as adding nuts, or a dash of coffee, etc. etc..
Good luck!