Add vinegar to sliced shallot at least ten minutes before preparing the beef. Finely shave the beef, so it is all extremely tender. Mix a small amount of minced garlic, maybe a quarter of a clove, or barely more than sticks to a few fingers. Salt both sides. Thinly slice a few large cranberries. Place cranberry rounds atop the beef. Add a thin, partial layer of the spicy, pickled shallot on top. Shave some new, raw horseradish, preferably with a microplane. Top with fresh arugula, cress, or other spicy greens. Serve immediately.