Step 1

Stir together the water and the cornstarch and set aside. Melt the butter in a large saucepan over medium-high heat. Add the flour and whisk to combine.

Step 2

Cook the flour mixture for about 5 minutes, stirring or whisking until it turns golden brown. Add the minced garlic and continue cooking for about 30 seconds, until it is fragrant.

Step 3

Add the broths and bring to a boil. Whisk in the cornstarch mixture and reduce to a simmer for about 5 minutes, until the sauce has thickened. Season generously with pepper. Taste and add salt, only if needed. Serve warm.