Three ounces dried morel mushrooms can be substituted for fresh. Set in boiling water, and let rest for a half hour; drain and use.
This is a fantastic company entree! I made the following changes and am making it again next week. I used beef broth, thyme instead of tarragon, half the butter amount, oyster instead of chanterelle mushrooms. I garnished with a little bacon and a fried morel and a little asiago cheese. Very easy and savory.