A wonderful, easy, moist, eggless chocolate cake recipe that my mother acquired from a dear friend of hers. The vinegar reacts with the soda, so there is no vinegary taste leftover as long as you use the right amounts of vinegar and baking soda. Fabulous with a rich, fudgy frosting, such as a chocolate sour cream frosting. Time doesn't include cooling time, so be sure to allow a couple-few hours to cool before frosting. Note: I usually bake this in a Pyrex tempered glass pan, and then I frost and serve it right in the pan. If you are planning to remove it from the pan before frosting and/or serving it, it may work better to lightly grease the pan and dust it with cocoa before you pour the batter in (thanks, I'mPat!).