OK, just got off the phone with Mom. To my surprise, her recipe is not some original creation, but comes from the Joy of Cooking (page 460 in the paperback version, entitled The All-Purpose Cookbook Joy of Cooking, Revised and Expanded, possible pubication date 1975.
We compared notes and my J of C recipe (hardcover edition, pp 668-669) is different. Here's the highlights of hers:
Rub meat thoroughly with pepper and garlic, place in deep crock or glass container - not metal
Marinade is heated but not boiled:
2 cups wine vinegar (red or white OK, or just mild vinegar)
2 cups water
1/2 C sliced onions
2 bay leaves
1 t peppercorns
2 t caraway seed (opt)
1/4 cup sugar
Cover beef with marinade to at least more than half, refriegerate 2 - 4 days, turning occasionally if beef is not totally submerged.
After 2-4 days, remove beef and strain marinade. Flour beef and brown on all sides in a little oil. Make pan gravy with drippings and strained marinade, adding crushed gingersnaps to gravy.
Serve over egg noodles and be prepared to be adored.
Hope this does it. LynnT's sounds good too! Darn, now I have to try both.