beef, sliced thin for shawarma (about 500 grams) • plain yogurt • each: beef seasoning, garlic and onion powder, black pepper, paprika • each: nutmeg, cinnamon • vinegar • Small pieces of lamb fat (tail fat, if available) • tahini (about 120 ml) • Water • each: salt, black pepper, cumin, ground coriander • Juice of half a lemon • Sliced onion, julienned • vinegar •