Cremini and Porcini Mushrooms Beef Stroganoff

Beef tenderloin is traditional and works great for Stroganoff—I especially like it because it’s so tender and cooks quickly. But it isn’t necessarily the most flavorful cut. So, I bump up the flavors in the dish by using earthy, intense porcini mushrooms to infuse the beef broth and finishing the sauce with creme fraiche, which I find to be lighter than the usual sour cream, with a nuanced nuttiness.