Maxperson
Morkus from Orkus
I think what @Lanefan is getting at, to continue the food analogy is the following.Or if you prefer a food analogy: If you replace the cream with tomato puree, and the clams with sausage, and the potatoes with tortellini, and the Old Bay with salamoia bolognese, it's not clam chowder anymore, even if it has the right structure, because it has (effectively) none of the components. Likewise, a carafe of cream, a container of chicken broth, a pile of potatoes, a bowl of freshly shucked clams, and a container of Old Bay aren't clam chowder either. The former has lost all but the tiniest similarities to clam chowder, having only the most fundamental structure (soup). The latter has all the components, but components alone don't make clam chowder, the cooking does.
The initial party consists of clams, pork, onion, and celery. Along the way pork retires and he adds in garlic. Then onion dies and he adds in potatoes. And so on. Pork and onions are still in there, since the soup(story) is the entire adventure. Clams wasn't replaced. A new ingredient was added. At the end of the adventure you wind up with some delicious Clam Chowder.
I'm not saying speaking against individual stories. I'm just saying that you can still get some really tasty soup without them.

