Django PART-1 Django ORM Video Lecture-13 #Selecting Related Objects

The video has shown to get the following items :order.id, order.customer.first_name to display on the html/webpage.
But, how to get Product title from the orderitem_set__product prefetch_related field for displaying it via template.html?
I have tried: order.orderitem_set.product.title…, but no use!