Koufteh Ghelgheli

Name: Koufteh Ghelgheli
Ingredients: 8 ounces ground lamb; 8 ounces ground beef; 2 onions (1 grated and 1 finely chopped); 2 teaspoons ground black pepper (1 for the meatballs and 1 for the sauce); 6 teaspoons kosher salt (3 for the meatballs and 3 for the sauce); 3 teaspoons ground turmeric (1 for the meatballs and 2 for the sauce); 1/3 cup chickpea powder; 1/4 cup vegetable oil; 1/3 cup lemon juice; 3 medium carrots, cut into 1/4-inch-thick rounds; 2 medium Yukon gold potatoes, cut in chunks no larger than 1 inch; 1/2 cup sour grapes (see Cook's Note); 1/4 cup Saffron Water, recipe follows; 4 cups cooked basmati rice, for serving; Platter of fresh herbs and edible flowers, for garnish; 1/4 teaspoon ground saffron