Classic Béchamel Sauce
This is the backbone of lasagna, gratin, and croque-monsieur. A proper béchamel should coat the back of a spoon without feeling heavy or tasting of raw flour.
Control the temperature to avoid scorched dairy.
Use a heavy-bottomed saucepan to prevent hot spots. Whisking continuously is the only way to ensure the texture remains uniform.
- heavy-bottomed saucepan
- balloon whisk
- ladle
What goes in.
- 4 tbspunsalted butter
- 1/4 cupall-purpose flour
- 2.5 cupswhole milk, warmed
- 1/4 tspkosher salt
- 1 pinchfreshly grated nutmeg
Tempering the Roux
Add the first half-cup of milk while the roux is still hot, whisking vigorously until it forms a thick paste. Only then continue adding the remaining milk to build the sauce.
The method.
Cook the roux
Melt the butter over medium-low heat. Stir in the flour and cook for two minutes, stirring constantly. It should smell like toasted grain and look like pale sand.
Incorporate the milk
Pour in a small splash of the warm milk and whisk until fully absorbed. Continue adding milk in a thin, steady stream while whisking until the sauce is smooth.
Simmer
Increase heat slightly to bring to a gentle bubble. Lower the heat and cook for another five minutes, stirring often to prevent sticking at the base.
Season
Remove from heat once the sauce coats the back of a spoon. Stir in the salt and nutmeg.
Other turns to take.
Mornay Sauce
Stir in one cup of grated Gruyère or sharp white cheddar after removing the pan from the heat.
Soubise
Whisk in a quarter cup of finely minced, caramelized yellow onions before serving.
When it doesn't go to plan.
Warm your milk in a separate pot or microwave before adding; cold milk creates shock that can lead to lumps.
If lumps appear, don't panic. Simply pass the finished sauce through a fine-mesh sieve into a clean bowl.
Place a piece of plastic wrap directly onto the surface of the sauce while it cools to prevent a skin from forming.
The ones that keep coming up.
Why does my sauce taste like flour?
The roux was likely not cooked long enough in the first step. Ensure the flour and butter mixture bubbles for at least two minutes before adding any liquid.
How thick should it be?
It should be thick enough to cling to pasta or vegetables. If it gets too thick, whisk in a tablespoon of milk to adjust the consistency.
How real cooks make it.
No one’s shared their version yet. Be the first to put your kitchen on the map.
Cook this your way?
Share your version — your steps, your story. We’ll feature it right here.
Add your recipe