Step 1

In a medium saucepan, dry toast the flour uncovered over medium heat until completely browned. Once toasted, reserve it in another container.

Step 2

In the same saucepan, heat the oil over medium-high heat and cook the mushrooms until golden and there is no liquid left.

Step 3

Add the garlic and green onion to the pan and continue cooking for about 2 minutes.

Step 4

Add the toasted flour and continue cooking for another 1 minute. Frequently scratch the bottom of the pan with a wooden spoon.

Step 5

Add the water, broth, Worcestershire sauce as well as pepper and herbs. Bring to a boil and simmer covered over low heat for 15 minutes. With a wooden spoon, scrape the bottom of the saucepan and stir the sauce frequently.

Step 6

Then simmer for 5 minutes uncovered to thicken the sauce. Continue to scrape the bottom of the saucepan and stir the sauce frequently with a wooden spoon.