Mix flour, sugar, cocoa, soda and salt. Make three wells in the flour mixture. In one put vanilla; in another the vinegar, and in the third the oil. Pour 1 c cold water over all and stir. No need to beat. Pour into 8 x 8-inch pan. Bake at 350 degrees F oven until it springs back.

From "Trail Boss's Cowboy Cookbook" by Society of Range Management.