Kebapcheta with Tzatziki

Name: Kebapcheta with Tzatziki
Ingredients: For the tzatziki; 4 ounces plain yogurt; 4 ounces sour cream; 1/2 English cucumber, shredded and blotted dry with paper toweling; 1 clove garlic, grated or mashed in a garlic press; 1 tablespoon dried dill weed; 1/2 teaspoon salt; 1/4 teaspoon black pepper; For the lamb; 1 1/2 pounds ground lamb; 1 medium onion, grated; 2 cloves garlic, grated or mashed in a garlic press; 1 slice white bread, soaked in water and then squeezed dry; 1 tablespoon ground cumin; 1 teaspoon black pepper; 2 teaspoons salt; 1/2 cup chopped parsley