An idea that's been kicking around for a couple weeks:
Cook a piece of siedfleisch in the pressure cooker (25 minutes after it started to sing) with water, onion, garlic, cloves, bay leaf, all spice, black pepper, and some vegetable boullion. Let cool a bit, then thinly slice. Make a sauce from sour cream, prepared horseradish, a bit of the beef cooking liquid, mashed garlic, chopped parsley, and black pepper. Mix with the sliced beef. Add chopped chives and quick-pickled onions and cucumbers (very thinly sliced, tossed with salt and white balsamico). Serve with good bread and a green salad.