Bacon-Mushroom Gravy

I love the smokiness the bacon lends to this mushroom gravy. There are a few ingredients that may be hard to find in your local grocery store, so feel free to substitute where needed. I like the flavor of rosemary with this sauce but if that is not your favorite herb, fresh thyme or flat-leaf parsley works nicely, too. This sauce is good enough to just eat on its own but at BB, I serve it with pork schnitzel.