How to Make a Roux
Learn how to make a roux with fat and flour, cook it to white, blond, brown, or dark stages, avoid lumps, troubleshoot, and use it safely.
Quick Answer
To make a roux, melt fat in a pan, whisk in an equal amount of flour, and cook while stirring until the roux reaches the color your recipe needs. Add liquid gradually while whisking to create a smooth sauce.
Ingredients and Tools
- Butter, oil, or drippings
- All-purpose flour
- Pan
- Whisk or wooden spoon
- Measuring spoons
- Liquid for sauce if needed
Safety Precautions
- Stir constantly because roux can burn quickly.
- Use caution with hot fat.
- Do not walk away from dark roux.
- Add liquid slowly to reduce splatter.
- Discard burnt roux because bitterness will remain.
Step-by-Step Instructions
- Step 1
Measure fat and flour
Use roughly equal parts fat and flour by volume for a basic roux.
- Step 2
Heat the fat
Melt butter or warm oil over medium to medium-low heat.
- Step 3
Whisk in flour
Add flour and stir until no dry flour remains.
- Step 4
Cook the roux
Stir constantly until it reaches white, blond, brown, or dark color.
- Step 5
Control heat
Lower heat if it browns too fast or smells scorched.
- Step 6
Add liquid gradually
Whisk in warm or room-temperature liquid a little at a time.
- Step 7
Simmer to thicken
Cook the sauce or gravy until flour taste fades and texture thickens.
Practical Example
Example: You melt butter, whisk in flour, cook until blond, then slowly whisk in milk for a smooth white sauce.
Common Mistakes
- Using high heat
- Adding liquid all at once
- Stopping stirring
- Burning dark roux
- Using too much flour
- Not cooking out raw flour taste
Troubleshooting
Roux has lumps
Whisk steadily and add liquid more slowly.
Roux smells burnt
Start over; burnt roux will taste bitter.
Sauce is too thick
Whisk in more liquid gradually.
Sauce is too thin
Simmer longer or make a small extra roux separately and whisk it in.
Helpful Internal Links
FAQs
What is roux made of?
Roux is made from fat and flour cooked together.
What color should roux be?
It depends on the recipe: white for cream sauces, blond for gravy, brown or dark for deeper flavor.
Can I make roux with oil?
Yes. Oil works well, especially for darker roux.
Why is my sauce lumpy?
The liquid was likely added too quickly or without enough whisking.
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