Creamy Tarragon Sauce Recipe

Ingredients (10)

• 1/4 cup unsalted butter, or margarine
• 1 tablespoon all-purpose flour
• 1 cup milk
• 1/2 cup sour cream
• 1 teaspoon dried tarragon 
• 1 teaspoon dried chervil
• 1 teaspoon dried basil
• 1 teaspoon garlic powder
• 1/2 teaspoon kosher salt
• 1/2 teaspoon freshly ground black pepper