A roux is a thickener made:

Question

Quizplus · Accepted Answer

A roux is made by cooking equal parts of flour and fat (such as butter or oil) until the mixture thickens and changes color. This mixture can then be used as a thickener for sauces, soups, and stews.

Option A is incorrect because combining starch and a cool liquid creates a slurry, not a roux.

Option B is incorrect because concentrating a soup stock would not create a roux.

Option D is incorrect because blending butter and flour creates a mixture that is similar to a roux, but it is called a beurre manié and it is used more as a finishing agent rather than a thickener.

A Roux Is a Thickener Made