Julia Child Béchamel Sauce Recipe

Before there were jarred sauces and cream-of-something soups, there was Julia Child Béchamel Sauce. Butter, flour, milk. Three ingredients that become the foundation of half of French cooking. Gratins, crêpes, lasagna, soufflé bases, cream soups. Master this and you open a hundred doors.

Julia called it one of the mother sauces in Mastering the Art of French Cooking. The French classify sauces into families, and béchamel is the matriarch of all white sauces. Mornay (cheese), Soubise (onion), Aurore (tomato), and dozens more all start here.

The technique is simple but exacting. Cook the flour in butter first so it doesn’t taste raw. Add hot milk gradually so it doesn’t lump. Simmer to thicken. That’s it. Fifteen minutes to something infinitely useful.

I keep a jar in my fridge most weeks. You never know when you’ll need it.

What is béchamel sauce? A French white sauce made from a butter-flour roux whisked with milk. One of the five mother sauces of classical French cuisine.

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Why You’ll Love This Recipe

• Foundation of French cooking: Learn this, and dozens of dishes become possible.
• Three ingredients: Butter, flour, milk. That’s the entire list.
• Endlessly versatile: Add cheese for mornay, onions for soubise, tomato for aurore.
• Better than anything in a jar: Smooth, creamy, and you control the flavor.
• Makes everything richer: Soufflés, gratins, crêpe fillings, lasagna.

The Science of Béchamel

The technique matters because chemistry matters.

Why cook the roux first? Raw flour tastes like paste. Cooking it in butter (the roux) eliminates that taste and allows the starch granules to absorb liquid smoothly.

Why hot milk? Adding cold milk to a hot roux causes uneven thickening. Hot milk blends smoothly.

Why gradually? Pouring all the milk at once creates lumps. Whisking in a bit at a time keeps the sauce silky.

Julia Child Béchamel Sauce Ingredients

Based on Julia Child’s technique. Makes 2 cups medium-thickness sauce.

For Thin Sauce (soups, creamed vegetables):

• 2 Tb butter
• 2 Tb flour
• 2 cups hot milk
• Salt and white pepper
• Pinch of nutmeg

For Medium Sauce (gratins, crêpe fillings):

• 3 Tb butter
• 3 Tb flour
• 2 cups hot milk
• Salt and white pepper
• Pinch of nutmeg

For Thick Sauce (soufflé bases, binding):

• 4 Tb butter
• 4 Tb flour
• 2 cups hot milk
• Salt and white pepper
• Pinch of nutmeg

How To Make Julia Child Béchamel Sauce

Step 1: Heat the Milk

1. Warm the milk: In a saucepan, heat milk until steaming but not boiling. Keep warm.

Step 2: Make the Roux

2. Melt butter: In a heavy-bottomed saucepan over medium heat.
3. Add flour: Stir with a wooden spoon or whisk. Cook for 2 minutes, stirring constantly. The mixture should bubble but not brown.
4. This removes raw flour taste: It should smell faintly nutty, not like raw dough.

Step 3: Add Milk Gradually

5. Remove from heat: Let bubbling stop.
6. Add hot milk in portions: About ¼ cup at first, whisking vigorously. The roux will seize up thick.
7. Keep whisking, add more milk: Once smooth, add another splash. Repeat until all milk is incorporated.

Step 4: Thicken

8. Return to medium heat: Bring to a gentle simmer, whisking constantly.
9. Simmer 3-5 minutes: Until sauce coats the back of a spoon. It will thicken more as it cools.
10. Season: Salt, white pepper, and nutmeg. Nutmeg is traditional. Just a pinch.

Recipe Tips

• Equal parts butter and flour: This ratio makes a medium sauce. Adjust for thinner or thicker.
• Hot milk, always: Cold milk creates lumps. Keep it steaming.
• Whisk constantly: Especially when adding milk and when simmering.
• Use white pepper: Black pepper shows as specks in white sauce.
• Nutmeg is essential: Just a hint. It’s the secret background flavor of French cooking.
• Don’t let it brown: If the roux browns, it becomes a different sauce (velouté starts with blonde roux).

Daughter Sauces

Béchamel is the mother. These are the children:

Sauce	Add This	Use For
Mornay	Gruyère and Parmesan	Gratins, mac and cheese
Soubise	Cooked onion purée	Eggs, vegetables
Aurore	Tomato purée	Fish, eggs
Crème	Heavy cream	Everything richer
Nantua	Shellfish butter, cream	Seafood dishes

How To Use Béchamel

• Gratins: Pour over vegetables, top with cheese, broil.
• Crêpe fillings: Mix with chicken, mushrooms, ham.
• Lasagna: Layer between pasta and meat.
• Soufflé base: Thick béchamel plus egg yolks, fold in beaten whites.
• Creamed vegetables: Fold blanched spinach, Creamed Carrots , peas, or mushrooms into thin sauce.
• Croque monsieur: Spread on bread before grilling.

How To Store

• Refrigerator: Press plastic wrap directly onto surface to prevent skin. Up to 5 days.
• Reheat: Gently over low heat, whisking. Add a splash of milk if too thick.
• Freeze: Up to 3 months. Thaw in fridge, whisk vigorously when reheating.

Troubleshooting

Problem	Cause	Fix
Lumpy sauce	Milk added too fast	Strain through sieve, or blend smooth
Raw flour taste	Roux not cooked long enough	Next time cook 2 full minutes
Too thin	Not enough flour, or not simmered enough	Simmer longer or add more roux
Too thick	Too much flour	Whisk in more hot milk
Skin formed	Not covered	Press plastic directly onto surface

Nutrition Facts

Per ¼ cup serving (medium sauce):

• Calories: 80 kcal
• Protein: 2g
• Total Fat: 5g
• Saturated Fat: 3g
• Carbohydrates: 6g
• Fiber: 0g
• Sugar: 2g
• Sodium: 90mg
• Cholesterol: 15mg

FAQs

Source: Based on Julia Child’s mother sauce technique from Mastering the Art of French Cooking

– Claire