What is a "roux" commonly used for?

• A. To bake bread
• B. To create a marinade
• C. To thicken sauces and soups
• D. To fry foods

Answer: (C)

A "roux" is commonly used as a thickening agent for sauces and soups. It is a mixture of fat, typically butter, and flour that is cooked together to form a paste. The process of cooking the roux helps to eliminate the raw flour taste and develops a rich flavor, which enhances the overall dish. When liquid is gradually added to the roux, it thickens the mixture as the starches in the flour gelatinize. This technique is essential in many cuisines, particularly in French cooking, where it serves as a base for classic sauces like béchamel and gumbo.

The other choices, while related to cooking, do not accurately describe the primary use of a roux. Baking bread involves yeast-based processes, a marinade is a mix of liquids and spices for flavoring meats, and frying foods pertains to a cooking method that requires submerging food in hot oil, none of which directly relate to the preparation or use of a roux.