Cut the tomatoes, cucumbers, green onions and parsley, add to the diced cheese and ham. Seasoned with the salt and the oil, the vinegar is optional. Dispense 6 to 8 servings according to the size of plates and pour sauce with garlic. The olives are used for decoration. garlic sauce: Mix yogurt and mayonnaise and thereto was added a pinch of garlic powder to be confused for a longer period to allow the garlic to mix thoroughly.