It's almost certainly the ripening process. Encouraging the b. linens more or less will vary result quite a bit. How much brine you leave on the cheese, for example. A wet cheese will be much more... funky than a drier one. With my Tilsiter, I was still trying to figure out the amount I needed to do to get what I wanted, so it was wetter than the Emmentalers and as a result had more of the linens flavor. Just a hint, though. Someday I might try to make one more authentically for the kicks.