In an electric frying pan or large skillet add butter, olive oil, garlic, basil, and salt. Saute together for a few minutes. Add venison strips-saute for ten minutes. Add 1/4 cup chicken broth and 1 pound of mushrooms. Cook for ten minutes. Add Marsala wine to taste. (Note, a good quality Marsala wine will require less while a cheaper quality will require more.) Continue cooking at a heat of about 325 degrees until you're satisfied with the taste. For best results, allow completed recipe to sit refrigerated over night and serve re-heated the following day.