Actually, it just tasted like a tart grape juice...
I googled it because I remember it being in a gallon GLASS jug (like wine) and David Letterman did a little spoof on it (Rare Grocery Store Finds, or something) and he pulled the jug out!! I was like "THAT'S IT!!" lol It was like in '90/'91 around then and the labeling has never changed...lol
I know the Bragg brand, but need to google this "Mother" thing now...lol