Juice of 4 lemons Place the meat in a mixing bowl and mix in the rice, onion, eggs (whites only), parsley, allspice, and salt and pepper. Mix very well and form into meatballs, about 2 inches in diameter. Place the oil in a large covered frying pan and add the meatballs in a single layer. Barely cover with water and put on the lid. Simmer the meatballs until the rice is tender, about 80 minutes. Remove the meatballs to a heated plate.