Sue, could this be the recipe you want???

Chocolate Vinegar Cake with Chocolate Mocha Frosting
Yield: 9 servings

1 1/2 cups unbleached flour, sifted
1 cup sugar
3 tbsp baking cocoa
1 tsp baking soda
1/2 tsp salt
1 tbsp vinegar
1 cup water 1 tsp vanilla extract
5 tbsp butter or regular margarine

Sift the flour, sugar, cocoa, baking soda, and salt together into a mixing bowl. Make 3 wells in the dry ingredients. Pour vanilla into 1 well; vinegar into 1 well and melted butter into the third. Pour water over all.

Beat with a wooden spoon until well blended. Pour batter into a greased 9-inch square baking pan.

Bake in a preheated 350 degree F. oven for 25 minutes or until cake tests done. Cool in pan on rack. Frost with Mocha Chocolate Frosting. Cut into squares.
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MOCHA CHOCOLATE FROSTING:

1 3/4 cups confectioners' sugar
3 tbsp butter or regular margarine
1/2 tsp vanilla extract
3 tbsp baking cocoa
3 tbsp hot brewed coffee

Mix confectioners' sugar, cocoa, softened butter, coffee, and vanilla in a mixing bowl. Beat, with an electric mixer set at medium speed, until smooth.

NOTE; This recipe came from a very old church cookbook that the woman found and is typical of many of the recipes of the 1800's. The vinegar was used to keep the cake from spoiling. Try this and I think that you will like it.