Heat a large skillet over high heat until very hot. Carefully add the oil and then the pork strips.
Add the mushrooms, onions, pepper, and salt. Continue cooking for 2 to 3 minutes, or until cooked through, stirring frequently.
Using a slotted spoon, remove the pork from the skillet and keep warm. Add the wine to the skillet and continue cooking until the mixture is reduced by half. Stir in the parsley, then return the meat to the skillet. Serve with freshly cooked noodles or spatzle. Makes 2 to 4 servings.