def serve_orders():
    time.sleep(1)
    while True:
        order = food_order_queue.dequeue()
        print("Now serving: ",order)
        time.sleep(2)

def serve_orders():
    time.sleep(1)
    while not food_order_queue.is_empty():
        order = food_order_queue.dequeue()
        print("Now serving: ",order)
        time.sleep(2)