Possible Clues:

• Whisked mixture
• Herb is said to be in this sauce mixture
• Mixture of fat and flour used for thickening sauces
• Michel --, French-born restaurateur
• Butter and flour sauce combination
• Cook's thickener
• Chef's sauce base
• Gumbo ingredient
• Herb gathered for chef's preparation
• Wanton reducing wrong when making thickener