Beef Brisket With Burgundy-Orange Sauce

Preheat the oven to 300 degrees F.
In a roaster into which the brisket fits comfortably, stir together the soup mix, wine, water and flour until blended.
Stir in the basil, thyme, marmalade, orange peel, sugar, garlic and pepper.
Add the brisket, spooning some of the sauce over the top and distributing the mushrooms evenly around the brisket.
Cover and bake for 4 hours, basting every hour, until tender when pierced with a fork.
If the sauce bubbles too rapidly, reduce the oven temperature to 275 degrees.
Remove from the oven and place the brisket on a sheet of heavy foil.
Pour the sauce into a bowl, cover, and refrigerate.
When the brisket is cool, wrap in foil and refrigerate.
Remove solidified fat from the sauce and discard.
Slice the brisket thinly against the grain.
Overlap slices in a shallow, ovenproof dish that is just large enough to hold them.
Pour the sauce over the meat and heat in the oven until hot and bubbly.
Serve to thankful guests.