Thanks for this trip down "memory lane"! This is the same marinade my mom used to make back in the 1950's, before commercial BBQ sauces were popular. Of course, in those days, with 4 kids and 2 adults to feed, she used the cheaper chuck steak or round steak. This turned out very tender and flavorful. There was just enough tang without overpowering the meat flavor. Thanks for re-introducing me to this easy recipe!
While we enjoyed the flavor and the use of the flank steak we felt it was a tad bit tough to chew. I marinated it over night. The flavor was great and the concept was original. I toasted my kaiser roll and put some thinly slice Swiss cheese on top. I used Beer Braised Onions for my onions. Everything worked well together. Nothing else was added. Our only concern was the steak was tough to chew every once in a while. Thanks for posting. :)
Yes, this is a great tasting marinade, just as promised in the intro. I used my food saver to marinate the steak and left it in for about 8 hours. I grilled it on my gas grill and it came out wonderful. Very good steak.