Mix together, vinegar, water, garlic and MSG. Pour over fish slices, and let stand for 1 hour. Spoon marinade over fish occasionally. Remove fish from marinade and pat dry with paper towels. Heat oil in frying pan. Sprinkle filets with salt, pepper and flour. Cook in oil until light brown. Serve with Sour Dough French Bread. Use stale bread as fresh bread gets soggy. Pour the remaining oil from frying pan. Add the left over marinade and bring to a boil. Dip pieces of bread in marinade. So delicious.