1. First make a white roux: over low heat, melt the butter and whisk in the flour. Cook 2-4 minutes, just enough to eliminate the bitter taste of raw flour. Color should not be allowed to change at all. Adjust butter or flour if necessary. 2. Combine four quarts of stock and the roux and whisk together until there are no lumps. Add mushrooms, salt, nutmeg, and white pepper. Whisk to combine and then simmer on low heat for 1.5 hours. Scoop off any scum that surfaces. Add some water if required to keep the sauce from getting too thick. 3. Strain through a cheesecloth into another saucepan. Add the remaining stock and allow the sauce to cool. It should thicken a little as it cools. ---------------------------------------------------------------------------
Nutrition
Ingredients
