boneless, skinless chicken breast or thighs, sliced into strips (about 500 grams) • plain yogurt • milk (60 ml) • Shawarma spice mix • Salt, black pepper, cayenne pepper, paprika • Garlic powder and onion powder • ground cardamom and pinch of cinnamon • lemon • Vinegar • small clove garlic, 1 small onion, 1 small tomato, and 1 small green bell pepper, all finely chopped • ketchup or tomato paste • butter or oil •